Casa Navàs is a modernist building in the city of Reus, Catalonia, Spain. Casa Navàs is a building designed by Catalan architect Lluís Domènech i Montaner, located in the city's . of Reus contracted Lluís Domènech i Muntaner as the architect of his new house. The building was constructed from 1901 to 1908. Nowadays the building is still the same as it was originally (except the tower), and that includes the furniture, the ceramics, mosaics, lights, etc.