With well over 130 falls and cascades to brag about, Hamilton, Ontario has earned its stripes as the waterfall capital of the world.

An isolated dive site teeming with cnidarians.

On the Oregon coast there is a natural hole that seems to be draining the sea.

The mysterious wonder of an underground waterfall is illuminated by multicolored lights.

Local lore says a serpent-like beast lurks in the deep basin below the falls.

This frequently-photographed waterfall takes only a short hike to visit.

This wondrous waterfall rushing down a green-covered mountain wasn't discovered until 2010.

This narrow canyon has been carved by the river over thousands of years into spectacular and curious forms.

This volcanic cave lake is essentially hard proof that Iceland is the most magical place on Earth.

A stunning, two-tiered waterfall made famous by poets, artists and the legend of a ghost dog.

Under the right circumstances, this waterfall in Yosemite briefly turns a luminescent fiery orange.

For two weeks every June, fireflies in the Smoky Mountains perform an astonishing light show.