Modernism (Art Noveau) is multifaceted in Barcelona. We will visit two masterpieces of local architecture, both Unesco listed and designed by the two greatest architects of early 20th century Barcelona. We will first enter Gaudí’s world famous and yet unfinished Basilica of Sagrada Familia. We will then learn of the work of Lluis Domenech Montaner by exploring the undeservedly much less known historical Santa Creu and Sant Pau hospital. A huge Art Noveau ensemble with quiet gardens, this hospital conceals underground a network of tunnels connecting the former medical wards to the old operating theater.