A vertiable architectural extravaganza of Edwardian exoticism, the restored baroque-style theater (1904) has a magnificent auditorium and a rooftop glass dome with a bar and great views. As one of the city's largest and most venerable theaters, the Coliseum functions mainly as the home of the English National Opera. Seemingly in better financial shape than it has been for some time, ENO continues to produce innovative opera, sung in English, for lower prices than the Royal Opera House. During opera's off-season, the house hosts a number of dance troupes, including the English National Ballet (www.ballet.org.uk). Guided tours (every other Saturday at 11:30 am, when productions are scheduled) cost £10.