From Greenster & Oddity Central: "One of the most bizarre national phenomena in the world, Green Lake dries out in the winter, becoming a hiking trail, and in the summer, refills to become a lake."
The moss gardens of Saiho-ji Temple in Kyoto, Japan
worlds largest swimming pool - 1013 meters long covers 80 acres, its deepest end reaches 115ft and it holds 66 million gallons of water
The rock pools at Huanglong Natural Preserve, Sichuan China
I WANNA GO! Grand Wailea Canyon Activity Pool Maui, Hawaii 25,700-square-ft wet playgrounds a destination in itself (guests receive a map upon entry). 9 pools at 6 levels (40 ft to sea level) connected by a river that carries swimmers along at varying speeds, lazy river currents to whitewater rapids. Highlights include 7 slides, grottoes, scuba certification pool, Tarzan pool w/ rope swing. The worlds only water elevator swimmers are lifted to the surface in a sealed chamber. Epic.
Ice cave in the Skaftafell National Park in Iceland. Ice caves collapse and new ones form as each glacier grinds slowly towards the sea. Local guides can help you (without dying) find one.
Should have been next years vacation .......... guess it still could be lol :-)