Barcelona's grand Liceu theatre houses some excellent examples of Modernista art by people such as Ramon Casas. Located along the famous Rambla, tours of the theatre are available in various languages and cost €16 for 50 minutes. As well as the artworks, located in El Cercle del Liceu, the tour takes you through the sparkling Renaissance-style vestibule, the magnificent Hall of Mirrors and the grand auditorium itself, dating back to 1847.