Every February, Yosemite's Horsetail Fall turns into a Firefall (Credit: Visitcalifornia.com/ CC-BY-SA-2.0)

California's Yosemite National Park is famous for its giant, ancient sequoia trees and impressive rock formations. They include El Capitan and Half Dome. But from mid to late February, the park's main attraction is Horsetail Fall, located at the edge of the eastern side of El Capitan. During this time, the setting Sun hits the seasonal waterfall at just the right angle, creating the illusion that it is on fire.