Academy of Music
The Academy of Music opened with an inaugural ball on January 26, 1857, and remains the oldest opera house in the United States still used for its original purpose. Designed by Napoleon LeBrun in the Renaissance Revival style, the hall — nicknamed the 'Grand Old Lady of Locust Street' — was home to the Philadelphia Orchestra from its founding in 1900 until 2001, and today houses the Philadelphia Ballet and Opera Philadelphia.
Photo: Dthomsen8 , Public domain