Watkins Glen State Park, NY
Heaven's Gate Mountain, Zhangjiajie City, China - Years ago, a cliff collapsed here and left a 400ft-tall hole, which many now believe to be the door to heaven. This staircase leading to the hole consists of 999 steps, the number "9" being chosen because it has the same pronunciation as the word for "eternal" in Mandarin.
Heaven's Gate Mountain, China
Borneo Rainforest Canopy Walkway; awesome!
Crater Lake National Park // Oregon. Formed after the collapse of an ancient volcano, which violently erupted approx. 7700 years ago. That eruption was 42 times as powerful as the 1980 eruption of Mount St. Helens. The basin or caldera was formed after the top 5000 feet of the volcano collapsed. Lava flows sealed the bottom, allowing the caldera to fill with 4.6 trillion gallons of water from rainfall and snow melt, creating the 7th deepest lake in the world at 1,932 feet.
China blew my mind. Go there and visit the Great Wall!