Casa Batllo is located near the crossroads of Carrer d'Aragó and Passeig de Gràcia in central Barcelona. To reach it by metro, take line 3 to the Passeig de Gràcia stop. Casa Batllo is open year round from 9am to 8pm, however their hours are subject to change, so check their website before planning your visit. Tickets are available online or at the door and cost 15€ ($21) each. Casa Batllo was designed and built by world-famous architect Antoni Gaudí between 1904 and 1906. It is the jewel in the crown of the Modernista style that swept Barcelona during the fin de siècle period. It creatively shapes light, form, and color in a startling number of different media. You will see wood, glass, ceramics, iron, and stone being used in Casa Batllo. In 2005, Casa Batllo was made a UNESCO World Heritage Site. Tours of Casa Batllo last about an hour and are accompanied by a complimentary audio guide in seven different languages. You will be able to visit the Nobel Floor (the original residence of the Batlló family), the Attic, the main staircase, lobby, and light well. You will also get a chance to explore the chimneys and rooftops, a special treat. The roofline of Casa Batllo is designed to look like the spine of the dragon killed by St. George, Santi Jordi in Catalonian. Casa Batllo is completely handicap accessible. Gaudí himself installed an elevator up to the roof. The space is cramped, but special wheelchairs are available.