With his Happy City Birds project, the street artist and designer Thomas Dambo has built more than 3,500 birdhouses on the streets of Copenhagen! Started in 2006, this project aims to fight the disappearance of trees by recreating habitats for birds with beautiful decorated urban trees! These Urban Bird Houses are made from recycled wood and then installed by Thomas Dambo in the streets, parks, or facades of Copenhagen. A useful and poetic project! I just love it.