1314 N. Broad Street
Philadelphia, PA 19121
The Blue Horizon was a ballroom built in 1914 for the Loyal Order of Moose as an attachment to a set of row houses from 1865. The venue was used for boxing from 1938 to 2010. It was used for fight scenes in the films Rocky V and Annapolis. When I visited, plans were in the works to demolish the facility and replace it with a parking garage.
The problem with bubbles is that they force one to decide whether to look like an idiot before the peak, or an idiot after the peak. (John Hussman)