Can Masdeu is a squatted social centre, residence and community garden in the Collserola Park on the outskirts of Barcelona. The building, owned by Sant Pau hospital, was occupied by international activists in 2001 after being abandoned for roughly 53 years.
On most Sundays from late September to early June, there is an open house and guided tour in which residents explain community living, consensus-based decision-making, ecological gardening and living, and the functioning of the social center. There is a collective meal and around 100 people come up to participate in free activities related to ecology, activism, and self-sufficiency.
Wikipedia https://en.wikipedia.org/wiki/Can_Masdeu
Official Website https://www.canmasdeu.net/
Address (Unnamed Road), 08035, Spain
Coordinates 41°26'44.721" N 2°9'26.917" E