The Million Dollar Pier had what was claimed to be the world's largest ballroom, as well as a Hippodrome Theater with 4,000 seats, Exhibit Hall, Greek Temple, aquarium and a roller skating rink. In 1908 Young built a mansion on the pier for himself, with the address as "No.
The text describes a large entertainment complex called The Million Dollar Pier, which included various attractions like a ballroom, theater, exhibit hall, temple, aquarium, and roller skating rink.  In 1908, Young built a mansion on the pier for himself.