Why it's incredible: The mountains' folded rocks form stunning rainbow patterns. As the name suggests, China's Rainbow Mountains are multicolored formations in the northwest of the country.

offers spectacular mountain scenery and hiking access to two of the region's most popular waterfalls: Rainbow Falls and Grotto Falls. Along the loop, you'll see historic log cabins, gristmills and ...

The Rainbow Mountains are located in the foothills of the rugged Qilian mountains and likely formed around the same time as the Himalayas, approximately 50 million years ago, according to NASA's Earth ...