It's time to say bon voyage to one of Disney World's classic attractions. Rivers of America, including the Liberty Square Riverboat and nearby Tom Sawyer Island, will be closed starting on July 7 as Disney prepares to transform the area into a new Cars -themed land.

Disney World’s Frontierland is getting a Rocky Mountain makeover with Piston Peak, as Rivers of America shuts down.

Sunday marks the last day for the Rivers of America, including Tom Sawyer Island and the Liberty Belle at Magic Kingdom. The rides will close Monday as Disney readies the area for the new-look Piston Peak National Park, a Cars -themed miniland that the company discussed in detail last month.