There's a lake that's a perfect square
Lake Sandoval, located in Peru's Manu National Park, is one of the few lakes in the world with a square shape. Measuring approximately 200 meters (656 feet) per side, the lake is nestled in a valley and surrounded by dense rainforest. Its unique shape is due to the geological processes that formed the lake, which have created a flat, rectangular basin. Despite its unusual shape, Lake Sandoval remains a tranquil and picturesque spot, home to a variety of wildlife including pink dolphins and caimans.