Water

Nature (and graffiti) reclaim this old waterworks that has been surrounded by a bike path and network of walking trails.

A limestone grotto where daylight filters in from below and turns the water a beautiful turquoise. Also home to a small underwater nativity scene.

The tallest waterfall in West Virginia.

Hidden underground, a remarkable 10th-century bath complex survives virtually unaltered.

Two gushing waterfalls of hot spring water within a block of each other.

A 1930s Art Deco swimming pool with a design inspired by grand ocean liners.

Local stories say that if you drink from this well, you will return to Olympia.

The propeller from the first steamship launched on Lake Tanganyika.

This horseshoe-shaped waterfall is the second-largest on the African continent.

Despite the name, the waters of this Canadian lake are actually blue-green in color.

Naturally carbonated water fills the mineral baths at this 19th-century California resort.

Along the Outback Scenic Byway, adjacent to hot springs, this human-made geothermal feature takes unexplained breaks.

The notorious pirate William Kidd might have buried his treasure around this local pond.

Once the center of power for the region's various factories.

This exaggerated sculpture resembles a well known feature of Vancouver: