Parc Güell is an urban park on Carrer d'Olot standing on the Muntanya Pelada to the north of the Barcelona district of Gràcia, Gaudí planned and directed the construction of the park from 1900 to 1914 for Eusebi Güell as infrastructure and facilities for a residential garden city based on English models. It was intended for sixty single-family residences. The project, however, was unsuccessful and the park became city property in 1923.  Still, it is one of Gaudí's most colorful and playful works even though it was never fully completed.

The large plaza is delimited by an extraordinary balustrade-bench that twists in serpentine manner to form winding courses, recesses, and small semi-enclosed areas where the facing of brightly colored trencadís creates a spectacular collage of color and texture.

Güell Park was declared a place of World Heritage by UNESCO in 1984.