The Walt Disney World Resort , informally known as Walt Disney World or simply Disney World, is an entertainment complex in the greater Orlando, Florida area. The resort opened on October 1, 1971 and is the most visited attraction in the world, with attendance of 52.5 million annually. It is owned by The Walt Disney Company through its division Walt Disney Parks and Resorts. The property covers 42,000 acres, in which it houses 24 themed resorts, four theme parks, two water parks, and seceral additional recreational and entertainment vanues. Magic Kingdom is the original theme park on the complex, and Epcot, Disney’s Hollywood Studios, and Disney’s Animal Kingdom opened throughout the 1980’s and 1990’s.