Guell park

This is listed as UNESCO World Heritage, together with another six works by Antoni Gaudi. 

It was conceived as a residential town, inspired by English garden cities, although the houses were never built and it ended up as a public park. It is considered to be one of the most important Modernist works in the world, displaying Gaudi’s full artistic powers as he turned his genius for architecture towards putting into practice many of his innovative ideas in construction. It was built on the Montana Pelada, a concave terrain shaped like an amphitheatre, with views of Barcelona and the sea. Only two of the houses originally planned for the estate were built. One of these is now the Gaudi House and Museum, and the other is Casa Trias house.