Casa Batlló Museum
Location: Barcelona, Spain
Barcelona's Casa Batlló museum, built in 1877, was famously restored by Antoni Gaudí and Josep Maria Jujol between 1904 and 1906. Its original name, Casa dels ossos, translates to "House of Bones," which is reflected in its gritty, organic exterior. It's known for its architectural history, modernist design, and collection of works by world-renowned architects.