David Perpiñán and Ulf Marquardt direct Wild Barcelona, a nature documentary about Barcelona's wildlife and the city's efforts to adapt to the Greening Cities strategy, creating a more sustainable and nature-friendly city. It is a production by Laengengrad Filmproduktion, ARTE, and Terra Mater, with Concolor Media. The film is part of a project of two nature documentaries about Catalonia for international distribution: one about Barcelona and the other focusing on Catalonia's wildlife in the summer.