Catalina Casino Ballroom. It is the world's largest circular ballroom, with a diameter dance floor that can accommodate 3,000 dancers. French doors encircle the room connecting the dance floor with the Romance Promenade, an open balcony that runs around the building. To reach the ballroom on the top level, the Casino building has two ramped walkways, both in enclosed towers that extend out from the circular building. Wrigley took the idea to use ramps instead of stairs from Wrigley Field, his Chicago Cubs stadium. The ramps allowed the large numbers of people using the ballroom to quickly move to and from their destinations. They each have a small lobby area just below the dance floor level. Catalina Island Museum In 1953, Philip K. Wrigley established the Catalina Island Museum on the first level, to preserve the history of the island from the pre-Columbian indigenous Tongva (Gabrielino) peoples through the pre-war 20th-century development by his father. The museum featured a large and comprehensive collection of original Catalina Pottery ceramics, produced by Catalina Clay Products between 1927 and 1937. On June 18, 2016, the museum relocated to a new building, located approximately one half mile from its original location in the Catalina Casino. The Ada Blanche Wrigley Schreiner Building is located at 217 Metropole Avenue. The museum continues documenting Catalina Island history, adding from World War II to the present day, and a research institute. It is the repository for all archeological digs on the island, and has one of the largest collections of Tongva artifacts in the world. There are now more than 10,000 photographs and negatives documenting island life from the early 1880s until the present day in the museum's photography collection. In popular culture The Casino figures in the 1935 film Murder on a Honeymoon. A portion of the 1974 film Chinatown was filmed on Catalina Island, featuring cinematic shots of the Casino. In 1984, Catalina Island and the Casino were filming locations for the Airwolf episode "Sins of the Past". A replica of the Casino was set ablaze in the episode. After players complete the 2020 action-adventure video game The Last of Us Part II, the main menu screen changes to a beachfront with a rowboat in the foreground and the Casino in the background, implying that Abby has finally reached the Casino to reunite with her former group. The theater is featured in Episode 12005 of California's