The Entertainment Capital of the World is a nickname that has been applied to several cities:
Las Vegas, because of its "broad scope of entertainment options including nightlife, shows, exhibits, museums, theme parks, pool parties, and so on."
Los Angeles, due to the area's radio, television, music, and filmmaking, as well as the abundance of tourist and amusement attractions in the region.
New York City
In a variation on the phrase, Branson, Missouri is known as the "Live Entertainment Capital of the World", owing to its array of approximately 50 theaters.