It's as if the herds walked straight out of a fairy tale into the Missouri wilds.

The ruins of an open-air theater built on this Georgia island in the 1970s.

Football field-sized microalgae production tanks on the Hawaiian coast create a stunning view from space.

This unusual lava tube spouts seawater during high surf.

Earth's tallest volcano is sacred to Native Hawaiians, and home to a dozen world-class observatories.

These picturesque Hawaiian falls are home to a rare species of fish that uses a special sucker to climb up cliffs.

More than 2,000 species of tropical plants call this nature preserve and sanctuary home.

This legendary urban waterfall creates a dazzling display of rainbows.

Hide from the tourist hordes in these relatively unknown, and unguarded lava caves.

A model of a galactic embassy is hidden in plain sight along the highway, proposed by a UFO religion to find the aliens that created life on Earth.

A true treehouse near Hawai'i Volcanoes National Park.

Formerly a lovely white sand beach this Hawaiian stretch is now a trap for countless tons of trash.

A beach made of semi-precious green sand on the Big Island of Hawai'i.

The southernmost point in the United States is a beautiful place to look at but a deadly place to wade in.

One of the largest-ever mental hospitals now sits abandoned, surrounded by 25,000 unmarked graves.