There are twenty-one Disney-operated resorts on the property, and many other resorts on and near the property. Walt Disney World contains four separate theme parks, two water parks, two mini-golf courses, and four golf courses. The property covers nearly 25,000 acres (39 sq mi 101 km 2), of which half has been used. Opened on October 1, 1971, the resort is operated by Disney Parks, Experiences and Products, a division of The Walt Disney Company. The resort is located within Orange and Osceola counties, and located closest to the cities of Winter Garden and Kissimmee. The Walt Disney World Resort, also called Walt Disney World or Disney World, or simply abbreviated WDW, is an entertainment resort complex in Bay Lake and Lake Buena Vista, Florida, United States, governed by the Central Florida Tourism Oversight District.