Kauai Tropical Rainforest
This image was captured on the island of Kauai in Hawaii, which is best known for its tropical rainforests. Hawaii is actually known as "The Rainbow State," which is why a rainbow is also depicted on license plates in this state. Rainbows are caused by the extra reflection of sunlight within raindrops.
Mount Rainier
This image is so pristine that it looks like it was generated by a computer. In reality, this is a photo of snow-covered treetops in Mount Rainier, Washington. Most years, Mount Rainier remains free from snow from mid-July through late September, but the ground is totally blanketed by Thanksgiving.