Established in 1905, Las Vegas officially becamea city in 1911. With the growth that followed, at the close of the century Las Vegas was the most populous American city founded in the 20th century (a distinctionheld by Chicago in the 19th century). The city's tolerance for various forms of adult entertainment earned it the title of Sin City, and this image has made LasVegas a popular setting for films and television programs. On the other hand, Las Vegas also has the highest number of churches per capita of any major U.S. city.Outdoor lighting displays are everywhere on the Las Vegas Strip and are seen elsewhere in the city as well.
The name Las Vegas is often applied to unincorporatedareas that surround the city, especially the resort areas on and near the Las Vegas Strip. The 4 mi (6.4 km) stretch of Las Vegas Boulevard known as the Strip ismainly in the unincorporated communities of Paradise and Winchester, while a small portion overlaps into Las Vegas and the unincorporated community of Enterprise.