The Open House 48h is the most important architecture festival in the metropolitan area of Barcelona.

The festival is free and takes place one weekend a year, in October. With the aim of showing that architecture has no borders, the programme extends throughout Barcelona and the metropolitan region.

Specifically, the festival takes place in several cities: in Barcelona, since 2010; in Santa Coloma de Gramenet, since 2013; in Vilassar de Dalt, since 2014; in Sant Joan Despí, since 2015; in Badalona, since 2016; in L'Hospitalet de Llobregat, since 2017; and in Sitges since 2021.

2025 Programme pending confirmation

More information here