Located in Barcelona's Gràcia district, Casa Vicens was the first major work of the architect Antoni Gaudí. The house is one of the seven buildings designed by the great architect which were declared a World Heritage Site by Unesco in 2005.

Built between the years 1883 and 1888, the house presents various spaces separated by stepped angles, in a concept opposite from that of La Pedrera in which wavy lines predominate. The construction shows oriental and Moorish, touches, fashionable at the time, with the facade covered in green and white glazed tiles. A clear allusion to Manuel Vicens i Montaner, exchange and stock exchange broker and the man who entrusted Gaudí to design his future home. For the decoration, Gaudí was inspired by the plants that grow in the garden of the estate, applying for the first time his principle of using nature as an inspiration for architecture.

In the interior the Moorish style continues to predominate, which manifests in a very pronounced manner in the room known as the "fumador" (smoking room). On the ceiling, ornamentation in the form of colourful plants and flowers complete an exotic and surprising ensemble that he made all the rage among the elite of Barcelona at the time.