What is known as the Operetta Theatre was designed by the famous Viennese architects, Fellner and Helmer, in 1894. When it was built, the giant stage of the auditorium faced two levels of intimate boxes arranged in a semicircle. A dance floor was included to provide a space adequately large enough for the waltz, polka, mazurka, and the galop. Between 1999 and 2001, the theater was fully restored. The 100-year-old chandelier presides above the auditorium. The original lamp statues and supporting columns blend in with the newly added colored glass windows, mirrors, and the period-style furnishings of the snack counter. The original ornamentation was restored, a row of boxes in the circle was rebuilt, and the most advanced European stage machinery was installed. Today the theater not only boasts having 917 seats, but it also has air-conditioning in the auditorium. A highlight among Art Nouveau style buildings, the Operetta Theatre hosts exquisite banquettes and balls -- among which is the opulent Operetta Ball. Performances of Romeo and Juliet are among the rotating standards. The off season is mid-July to mid-August. The box office is open Monday through Friday 10am to 2:30pm and 3pm to 7pm and Saturday 1pm to 7pm.