The opulent car collection of an eccentric Sheikh housed in his own private pyramid.

Groups of prehistoric tombs that dot the mountains of northern Oman.

Commercial airplanes land mere feet over the heads of sunbathing beachgoers on this tiny island.

Breathtakingly blue walls shimmer inside the "Glacier Behind the Town."

A bizarre roadside attraction and the first instance of miniature golf in the world.

A cemetery for only coon hounds in northwest Alabama.

A 56-foot tall statue of the god of fire looks out over Birmingham, Alabama.

148 feet long and in the middle of a verdant forest.

A miniature city built by a single hunchbacked monk.

Holy Hindu shrine in an enormous, monkey-filled limestone cavern.

New fungal and bacterial species call this deadly lake home.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

Enormous lake at the bottom of a unique cave system.

The rocks in this arid basin leave trails of movement behind them.

The ghostly remains of an accidental sea.