Orlando is one of the most visited cities in the world primarily due to tourism, major events, and convention traffic. It is the third-most visited city in the U.S. after New York City and Miami, with over 2.9 million visitors as of 2022. Orlando International Airport is the 13th-busiest airport in the United States and the 29th-busiest in the world. The two largest and most internationally renowned tourist attractions in the Orlando area are the Walt Disney World Resort, opened by the Walt Disney Company in 1971 and located about 21 miles (34 km) southwest of downtown Orlando in Bay Lake, and the Universal Orlando Resort, opened in 1990 as a major expansion of Universal Studios Florida and the only theme park inside Orlando city limits.