[energiadecreixent] A Transition Vision For Barcelona City

[Fun Peace]

A Transition Vision For Barcelona City
Towards a healthier, happier, eco-effective Barcelona.
Greening the city, connecting communities, C2C city

Many of us in Barcelona en Transició believe that Barcelona city is in a very 
good position to become an urban leader once again, as it has been before, 
especially 150 years ago with the Eixample vision of Ildefons Cerdà. Those that 
are in the position to make calls for how the city moves foreward could take 
bold steps to try to make the city demonstrate to Europe and the world what a 
sustainable city could be. We in the Transition group have ideas we wish to 
share about what such eco urban visions might be…



THE SELF-SUFFICIENT CITY: Envisioning the habitat of the future was a recent 
architectural competition run by IAAC (Institute for Advanced Architecture of 
Catalonia). A submission from one of the Barcelona en Transició collective, 
based on Transition and Permacultural ideas, was selected as a finalist, 
published  in IAAC´s book, and its 1 minute film summary of the proposal was 
screened in CCCB. 



150 word Summary of the proposal and the 1 minute film screened in CCCB: (vid 
only viewable in blogpost)


Create urban greenway / CPUL mesh
Develop more bikeways/ walkways to easily connect from within city centre to 
nature: rivers, sea, surrounding hills. Allow all abandoned spaces to become 
indefinite temporary gardens. Specify strategic zones as permanent community 
gardens, including within all existing public parks and schools. Connect these 
nodes by greenways. Turn greenways into CPUL´s (Continuous Productive Urban 
Landscapes), Plant fruit and nut trees, berry hedges, diverse vegetation, food. 
These bio threads allow nature into the city; butterflies, song birds, pollen. 
Use city roofspace(s) as one vast CPUL, solar energy harvest, water collection 
zone and new Public Park. As private car use diminishes turn old “car lanes” 
into “food lanes”. Create mixed use clusters around gardens, part of the urban 
fabric: play area, sport complex, café. Make spaces experimental, adaptable and 
open to everyone. Let all life adapt and grow.


Here is the submission in its totality. Below are the 3 A3 panels that were 
submitted, click on each panel to view in PDF. Underrneath is a summary of the 
ideas examined.

PANEL 1 (1,76 MB)

PANEL 2 (1,06 MB)

PANEL 3 (2,98 MB)

NOTE – C2C stands for Cradle to Cradle city, which is inspired by the 
copyrighted ideas of Michael Braungart and William McDonough
Proposal outline in more detail:
__________________________

9 simple, immediate, intelligent steps for a healthier, happier, eco-effective 
Barcelona 



1 – Healthy cities address their rivers lovingly.
2 – Make a mesh of connected greenways in the city.
3 – Turn greenways into CPUL threads.
4 – Edible Barcelona
5 – Use the city to cleanly power its transport
6 – Barcelona has a water crisis. Time to start using water smartly.
7 – Make urban wandering more joyful
8 – “Let the Eixample mosaic of hidden green zones sparkle in the city”
9 – Passeig de Sant Joan Park

1 – Healthy cities address their rivers lovingly.
These zones could / should become a very high use and very important zone for 
the city. Recently the river Besos’s edges have been improved and one side 
included for the Ronda Verde greenway. Presently there is just endless space 
taken up by grass. We suggest a mix of use, designed in a creative and appealing 
way. Diversify the land with the inclusion of areas to eat, play, plant food, 
compost, make art and engage in education. Also include many areas of wildness, 
biodiversity and habitat. Easy and safe bike access from the city is desirable. 
Many Aula Ambiental’s should also exist here. Possible future architectural 
competition zone.

2 – Make a mesh of connected greenways in the city.
Closing the Loop(s): Develop more bikeways/ walkways to easily connect from 
within city centre to nature: rivers, sea and the surrounding hills. Use these 
routes to connect presently disconnected nodes: nature spots, city parks, 
community gardens, schools, libraries… Routes become critical urban threads, 
developing ecologically with time. Create new nodal points on threads for more 
amenities as use increases: Expect to grow more eco roots (routes) from nodal 
points. Ensure all urban street bike routes have edge ramps, for safety reasons. 
Make all urban bikeway surfaces permeable.

3 – Turn greenways into CPUL threads.
Create CPULS (Continuous Productive Urban Landscapes) for the city. Allow all 
abandoned spaces to become indefinite temporary gardens. Specify strategic zones 
as permanent community gardens, including within existing public parks and 
schools. Connect these nodes by greenways. Turn lands alongside greenways into 
green zones by planting trees and diverse vegetation, these bio threads allow 
for flows of animal life, thereby bringing nature into the city; butterflies, 
song birds. Create mixed use clusters around gardens, part of the urban fabric: 
play area, sport complex, café. Make spaces experimental, adaptable and open to 
everyone.

4 – Edible Barcelona
Allow for all parks to have community gardens. Use city roofspace(s) as one vast 
CPUL, slar energy harvest and water collection landscape, as well as new Public 
Park. Make Tree lined streets with edible trees; nuts and fruits. Introduce 
urban berry hedges. As private car use diminishes turn old “car lanes” into 
“food lanes”. Offer incentives to people to plant own food everywhere. Havana 
has done it, Middlesborough is doing it.

5 – Use the city to cleanly power its transport
Towards a zero carbon, car free eco city: Promote car pooling and sharing. All 
City buses and cars become electrically powered, non CO2 emitting vehicles, 
powered by cities solar roofscape. “Petrol” garages become quick battery 
exchange points for vehicles. Stationary vehicles also powered in and by parking 
lots.

6 – Barcelona has a water crisis. Time to start using water smartly.
City must collect, clean, store and reuse its rain water. Use “living machines” 
to treat wastewater from sinks, bathtubs, toilets for reuse as irrigation in 
city gardens and flushing toilets. Reduce our demand on potable water. Make much 
of the city pervious, to allow water back into the natural water cycle.

7 – Make urban wandering more joyful
There are a limited amount of small public parks throughout the city. Presently 
many parks remain closed until 9am, by which time many people are already at 
work. Best situation is where parks never close; when not possible insist parks 
open at 8am. Encourage more entry / exit points for parks, so they become flow 
through zones. Make parks landscapes of colours, sounds and smells. Create water 
capturing and storage systems between parks and neighbouring buildings. Allow 
for community gardens, composting points, outdoor education, Aula Ambiental’s… 
Make parks the focal point of new community clusters.

8 – “Let the Eixample mosaic of hidden green zones sparkle in the city”
Cerda’s original plan saw each illa’s courtyard as a beautiful publicly 
accessible garden. Unfortunately most were filled in. Support ProEixample’s work 
to transform them back to green zones and encourage more public access to these 
zones. Make more than one entrance to the blocks, to maximize people flow. 
Explore food production, composting and water collection in these zones.

9 – Passeig de Sant Joan Park
This fine passageway should be finished to the degree it deserves. Presently it 
is composed of three sections that form an edge to the old town and makes a 
direct connection between Gracia and the cities lung; Parc de la Ciutadella. The 
first section is the most pleasant, Travessera de Gracia to Avinguda Diagonal, a 
continuous zone of rest, play, flowers and fine old trees. Its final section, 
Arc de Triomf to the park along Passeig de Lluis Companys, is a classical tree 
lined avenue with some zones for petanca. We suggest that the missing section 
needs the same area given over for pedestrian and bike use, greenery, food 
production. This greenway can continue upward via Placa Joanic and Carrer 
Escorial, to act as a central route way from the city to Parc Guell and beyond 
to the nearby hills of Collserola.
__________________________

Barcelona is one of Europe’s most polluted and dirty cities.  Let her roofscape 
help remedy this.

Picking a juicy orange from a nearby tree and eating it, relaxing and talking 
with friends on a bench, working in a community garden to cultivate food, 
smelling the colourful flowers. All this in a place that’s always been there, 
but never been there.

A vast zone of food production, solar energy harvest, water collection, a series 
of public parks of varying scales; this is what the roofscape of Barcelona’s old 
city could easily be like. A many hectored, multi islanded, connected green 
space, linked by a network of bridges. A very exciting new urban terrain which 
would help reduce the cities carbon emissions by sequestering carbon while 
creating clean, cool and fresh air for the city. Presently, about 80-90 % of 
this area is unused and inaccessible to the inhabitants below. It now acts as a 
huge heat island, raising the cities temperature and worsening smog levels. 
Green roofs act as natural rain water drainage systems and also insulate the 
apartments below, further alleviating need for air conditioning.

Soon Barcelona’s Ajuntament might have to pay a carbon tax; this money could be 
used now to offer incentives to landlords to immediately cover their terraces 
with planted green roofs. From there public–ising of roofspaces might begin. 
Take this bold urban step and make Barcelona a model urban city once again.
__________________________


From the block to the table: a closed loop of waste treatment, food production 
and much much more.

The Eixample’s macro level sees pedestrian routes through and between block 
interiors as mechanisms for connecting wider communities by movement through an 
urban web of various green spaces. At the micro level the inclusion of services 
in these parks for the immediate community act as strong catalysts: schools, 
libraries, civic centres, parks, playgrounds, sport zones… these spaces can be 
altered to radically boost their blocks eco performance, while also becoming 
even more loved spaces by their communities.


Is a fully self reliant block feasible? Let’s imagine…  Intelligent collection 
and recyclical use of rainwater being the key, green roof sections are 
introduced to the blocks roof terraces which begin draining rainwater to a 
strategically placed storage pond in the parks sunny area. External green 
facades are introduced on the blocks western walls, both inside and out, to 
protect against difficult solar over heating. These double up as water purifiers 
for blocks grey waste waters. The end water is recycled for flushing toilets. In 
time, these facades might bear fruit. Intelligent planting is set around and in 
the pond, which is transformed into an urban wetland urban wetland, treating the 
blocks waste black waters, the outcome of which feeds all the blocks plants.

A communal composter is created in the park for all organic wastes. The output 
of which is used in the new areas for food planting in the park. The park 
wetland has created a unique habitat and biodiversity: fish, frogs butterflies 
and ducks can be seen and heard. The parks air is now cooler and fresher, 
breezes flow with scents from aromatic herbs, the parks microclimate is felt to 
be ideal. A garden school starts in the block; soon families are transforming 
their roof terraces and balconies into food production zones. Most of the time, 
the kids are the teachers. Community is the vital word here, without it all else 
falls apart. Bottom up planning offers opportunities to connect and participate. 
Gardens and food bring people together. At harvest time the community eats 
together at tables in their park. The park becomes a model for similar parks 
nearby, in time all blocks copy its simple eco efficient and intelligent 
techniques. Parks and projects become the major catalysts for local interaction: 
spaces for education, trial and error, working and learning together. They take 
time and love to develop and have their own life force. They are the Eixample’s 
sacred spaces.

Strangers enter the many parks and enjoy the tranquility of the water and the 
wildlife. Some rainwater is returned to the natural ground table and much is 
used to run the block, this alleviates greatly from the municipal system, 
reducing their energy consumption. The block consumes less potable water; in 
time maybe it will require none at all. Barcelona is well on the road to being a 
beautiful and healthy, eco effective city.
__________________________

Via Verde BCN: A series of greenway ripples, radiating out from the green heart 
of the city

Parc de la Ciutadella is not only the cities strategically placed central green 
lung; it happens to make up  one of the most deeply loaded parts of Barcelona’s, 
and indeed Catalunya’s, urban and social history. In short; it matters. From 
this much loved city space, and always connecting back to and through it, are 
the 3 ripples; a series of radiating greenways that form a simple orbital 
matrix, the spine of a network. This structure forms the organising system 
through which all future greenways routes (roots) weave, from within the city 
out to her sea, rivers and surrounding hills. And from there to the wider 
networks beyond…

Ronda Verda: An orbital 72 km bikeway that is currently being constructed for 
Barcelona city. It is the first urban greenway loop. It connects the coastal 
beaches, the river Besos, the mountain of Montjuic and the cities natural 
backbone, the hills of Collserola.

Ronda Azul: The 25 km blue loop is a very important strategic greenway. It 
branches from the first loop at Montjuic and Forum and links directly to the 2 
major urban nodes that are the train stations of Sants and Sagrera; the future 
high speed AVE station and expected gateway to the city. It also connects the 
city to its balcony; los Tres Turons, the 3 hills, the green zone within the 
city which include Parcs Putxet, Güell, Del Carmel and Guinardo. The remainder 
connects the treelined walkways of Rambla de Prim and Avenue de Tarradellas with 
many smaller parks and food gardens of Vallcarca, Maragall and Sagrera.

Ronda Rocco: A 5 km red loop through the heart of the city: From the very 
sculptural Parc de l’estació del Nord, through Arco de Trinfo and Passeig de 
Lluis Companys, this greenway passes through Parc de la Ciutadella, crosses its 
new eco-city bridge to Parc Barcelonetta and onto the sea. After a swim, one can 
weave back through Hospital Del Mar´s green zones to connect with the parks 
recently built over the underground rail lines.

Parc de la Ciutadella and her roots:
A series of root like threads weave outward from the park through the urban 
orbital spinal network, creating new urban nodes: The premiere greenway seeks 
water: through Parc de les Glóries Catalanes, Sagrera AVE station, to the new 
Besos river connection at Trinitat. Another leads through the 2 modernista 
architectural gems of Hospital St Pau and Gaudi’s Sagrera Familia, toward 
Guinardo Park and Hortas greenway. In time more roots and sub roots connect as 
citizens adapt it to their needs; an ever growing, organic, open network.

From the city to the sea:  Parc de la Ciutadella Closes the Loop
The final and most strikingly visual section which closes the loop of the entire 
greenway network are the changes to the green heart of the city; her park. With 
the removal of the zoo to Forum, the park expands over her old barriers, the 
dirty old rail and car arteries, and connects to the “sea side” with a 
spectacular new colourful tree filled bridge. From the Sagrera gateway along the 
greenway to the sea; Barcelona has a bold new Barcelona has a bold new 
eco-urbanism


      
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