Buenos Aires is one of the world's great capitals of theater. The Teatro Colón is a national landmark for opera and classical performances; built at the end of the 19th century, its acoustics are considered the best in the world, and is currently undergoing a major refurbishment in order to preserve its outstanding sound characteristics, the French-romantic style, the impressive Golden Room (a minor auditorium targeted to Chamber Music performances), and the museum at the entrance. With its theatre scene of national and international caliber, Corrientes Avenue is synonymous with the art. It is thought of as the street that never sleeps, and sometimes referred to as the Broadway of Buenos Aires. Many great careers in acting, music, and film have begun in its many theaters. The Teatro General San Martín is one of the most prestigious, along Corrientes Avenue, and the Teatro Nacional Cervantes functions as the national stage theater of Argentina. The Teatro Argentino de La Plata, El Círculo in Rosario, Independencia in Mendoza, and Libertador in Córdoba are also prominent. Griselda Gambaro, Copi, Roberto Cossa, Marco Denevi, Carlos Gorostiza, and Alberto Vaccarezza are a few of the more prominent Argentine playwrights. Julio Bocca, Jorge Donn, José Neglia, and Norma Fontenla are some of the great ballet dancers of the modern era.