Located on Mount Perada, Barcelona, the park was built in 1900. It was originally a failed real estate project. It was designed by Gaudi to turn it into a fairy tale world. From 1906 to 1926, Gaudi worked and lived here for 20 years. Although the project only completed the "public facilities" portal, central park, elevated corridor and several subsidiary houses, it is still rated as a World Heritage Site by UNESCO.