Casa Batlló is an architectural masterpiece located in the heart of Barcelona, Spain. Constructed in 1877 and remodeled in 1904 by Antoni Gaudí, this building has become a World Heritage Site and is visited by people from around the world. Dubbed "The House of Bones" due to its visceral, skeletal-like aesthetic and organic qualities, the building features unusual tracery, irregular oval windows, flowing sculpted stone work, and brightly colored ceramic tile mosaics. Visitors to Casa Batlló will be treated to breathtaking views of one of Gaudi's most celebrated works of art, with a remarkable roof formed into the shape of a dragon's back and plenty of original details to explore.