There are lots of strange coincidences that in the end appear to be both beautiful and functional. Often I find these examples more interesting than references found in magazines, books or blogs. It might have to do with the personal experience often attached to these places, but it is not just that. These places usually have a multilayered history to them. They were never intended to be what they are, but someone happened to see a potential.
In Barcelona a lot of climbers go to La Foixarda. This spot is a little bit hidden in one of the excavations on Montjuic, but because of the specialised program, every climber in Barcelona knows about it. It is a tunnel with climbing grips. On both sides of the tunnel it is also possible to climb on rock. By night the tunnel is lit. The strength of this location is its robustness. There are no locker rooms or showers. It is outside and you can play your guitar while watching your friends climb and eat or drink wherever you want. There are no opening- or closing times. You can stay for an hour or five, and it is free of charge.
Also in Barcelona at El Carmel, you will find what is popularly called los Búnkers. They are ruins from the civil war situated on the highest peak of the city. It was of course never intended to be a park, but with its views, multiple platforms and level changes it is a popular spot for just hanging out or having a picnic. It is a place where you can go alone or with a group of people. If you are alone you can find yourself a little hideaway and read a book. The physical surroundings offer a broad range of scales and possibilities. Today the bunkers form a part of the Museum of Catalan History.