Events on September 4 in history

Tokyo DisneySea opens to the public as part of the Tokyo Disney Resort in Urayasu, Chiba, Japan.

The Tokyo Disney Resort (, Tky Dizun Rizto) (local nickname TDR) is a theme park and vacation resort located in Urayasu, Chiba, Japan, just east of Tokyo. The resort is fully owned and operated by The Oriental Land Company under a licence from The Walt Disney Company, who constructed and designed the resort and its various attractions.

The resort opened on April 15, 1983, as a single theme park (Tokyo Disneyland), later developing into a resort with a second theme park (Tokyo DisneySea), five Disney hotels, six non-Disney hotels and a shopping complex (Ikspiari). Tokyo Disneyland was the first Disney theme park to open outside the United States and the resort is the only Disney Parks resort in the world not owned or operated by The Walt Disney Company in any capacity.

Tokyo DisneySea (東京ディズニーシー, Tōkyō DizunīShī) is a theme park at the Tokyo Disney Resort located in Urayasu, Chiba Prefecture, Japan, just next to Tokyo. It opened on 4 September 2001, at a cost of 335 billion yen. The Oriental Land Company owns the park, and licenses Disney characters and themes from The Walt Disney Company. With a size of 176-acre (71.22 ha), Tokyo DisneySea attracted nearly fifteen million visitors in 2018, making it the fourth-most-visited theme park in the world.