Casa Mila, which is better known as La Pedrera, is a beautiful building designed by Antoni Gaudì. It is located on the Passeig de Gràcia, one of the major avenues in Barcelona and also one of its most important shopping and business areas, containing several of the city's most celebrated pieces of architecture. The Passeig de Gràcia is considered to be the most expensive street in Barcelona in terms of renting or buying property. The building is part of the UNESCO World Heritage Site "Works of Antoni Gaudí".
