4. New York Hippodrome, New York

The New York Hippodrome, also known as the Hippodrome Theatre, first opened its doors in 1905 and was claimed to be the biggest theatre in existence at the time. With a seating capacity of 5,300 and state-of-the-art technology, it was a sensation that sold out on the opening day.

During its glory days, it had all sorts of the grandest performances, including vaudeville magician Harry Houdini, 500-member choruses, and circus animals. By the end of World War I, it had begun to decline and tragically was demolished in 1939. Worse yet, it was replaced by an office building of all things. Typical.