"Built between 1886 and 1890, Palau Güell is rumored to be the first Art Nouveau building in the world. This home of the Güell family is tucked down Calle Nou de la Rambla, and the mood inside is much darker than later Gaudís. Picture swaths of dark wood with grey marble floors and pillars and a fabulous old organ that’s often played for concerts. Don’t miss the roof terrace, where 20 chimneys and 50-foot spire are a Technicolor explosion." - Gemma Askham
