Koster and Bial's Music Hall was an important vaudeville theatre in New York, famous in cinema history as the site of the first public exhibition of the Vitascope on April 23, 1896.
Attractions included Buffalo Bill's Wild West Show, the Liberty Bell, and the first public demonstration of C. Francis Jenkins and Thomas Armat's motion picture projection device which they called the Phantoscope.
Previous projectors, including Thomas Armat's projector, marketed by Edison as the Vitascope, had used a "beater mechanism", invented by Georges Demenÿ in 1893, to achieve intermittent film transport.