by Gerry Mak in New Eco on Monday 27 June 2011

Some pretty cool-looking birdhouse ‘cities’ have sprouted up in the London boroughs of Chelsea and Islington as part of the Secret Garden Project by UP Projects, an organization that organizes public art projects. The aim of Spontaneous City in the Tree of Heaven is to promote biodiversity in urban green spaces.
Birdhouse city (2)
Birdhouse city (3)