Seven Seas Lagoon, Artificial lake at Walt Disney World Resort, Florida

Seven Seas Lagoon is an artificial lake at Walt Disney World Resort in Bay Lake, Florida, near Orlando. It lies south of the Magic Kingdom theme park, separating the park from its parking lot, and connects with the adjacent Bay Lake through a narrow canal crossed by a water bridge. The lake reaches a depth of 14 feet (4.3 m) and holds three islands: Blackbeard Island, Castaway Cay and Beachcomber Island. From the water, the castle's pale grey stone base, blue-roofed turrets and tall blue spire rise beyond a strip of trees.

The lake was created in the early 1970s by transforming swampland into a navigable body of water, opening at the same time as the Magic Kingdom in 1971. The construction established a central link between the first facilities of the resort.

The resorts along the shore bear names like Contemporary, Grand Floridian and Polynesian Village, each reflecting a different architectural approach that shapes the waterfront view. Guests staying there often watch fireworks above the water, launched at set times in the evening.

Ferry boats shuttle regularly between the two shores, offering a ride across the water as an alternative to the monorail. The crossing takes just a few minutes and allows an open view of the surrounding resorts and the castle in the distance.

Three islands sit scattered across the surface, including one that once housed a wave-making machine to generate artificial surf. The device was later decommissioned, and the island now serves other purposes within the resort operations.