High Quality Content by WIKIPEDIA articles! The Rivers of America is an artificial river found in the Frontierland district of the Magic Kingdom-classed Disney theme parks around the world. The first river was built in Disneyland when the park opened in 1955. It surrounds Tom Sawyer Island, which can be reached by rafts traveling from the Frontierland mainland. Additionally, there are other water-based vehicles which are found on the river. The sights along the Rivers include a Native American tribe, a burning cabin (though the cabin at Disneyland hasn't been burning for years), and various animatronic wildlife.