Barcelona Materials: Local Materials for Regenerative Architecture

The first piece of Barcelona here is Montjuïc stone, the rock the city was founded on, and you are meant to put your hand on it. Everything in the show is there to be touched: stone, earth, binders and timber, in pieces chosen by the building school EPSEB-UPC.

It follows the city in three steps, the old core of Ciutat Vella, the Eixample expansion and today's Sant Martí, moving from hand-worked techniques to prefabricated natural materials such as industrialised timber and earth. The curators' argument is that the low-carbon city will be built by reinventing old materials rather than inventing new ones.

This is the Sant Martí stop, at MUHBA Oliva Artés in Poblenou, until 1 November; then it moves to the EPSEB school until 10 December. Entry is free with no booking. MUHBA lists Wednesday to Friday, 10:00 to 15:00 and 16:00 to 18:00, and the Architecture Capital programme also gives weekend hours, so check before going. It runs in Catalan and Spanish.