
Frontierland Becomes Piston Peak National Park in Magic Kingdom Overhaul
Disney World is reshaping Frontierland into the Piston Peak National Park expansion, with construction walls, narrowed walkways, and the removal of staples like Rivers of America, Tom Sawyer Island, and the Frontierland boardwalk; Big Thunder Mountain Railroad is under refurbishment through 2026 as other attractions close or relocate, signaling the largest expansion in Magic Kingdom history that some fans lament as Frontierland’s legacy fades.


