A lovely aquatic park built by a one-armed Civil War veteran who made a fortune from lotuses.

A tiny piece of the Moon is embedded in this stained glass masterpiece.

Home to items never before seen by the public.

The site of the climactic scene from the classic horror film is now a historic landmark.

Climb a steep hill in 90 seconds on the second-oldest urban subway in the world.

This Turkish cave boasts some rather bizarre associations with the King of Mount Olympus.

The ancient latrines of the Greeks, in all their public glory.

The best-preserved ancient theater in the world.

Over the centuries, this island paradise has done it all, from providing monks with ecclesiastical respite to sheltering an exiled Leon Trotsky.

A charming beach town in Turkey captures all the colors of the rainbow.

Flames have been burning within this mountain for more than 2,500 years.

Roman ruins, natural methane fires and a lovely beach.

Five sultans and their families rest in eternal splendor, teeming with overlooked beauty and drama.

Hidden just under the waters around this Turkish island are the ruins of a once great city.

A Turkish ghost town abandoned in a population exchange with Greece.

This famous city eluded concrete detection until the early 2000's.

These tombs were built into the side of a mountain so that ancient angels could reach the dead.

A marvel of Byzantine engineering under the streets of Istanbul.

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

More than five miles of underground passageways.

This old school, eccentric, and independent video rental store refuses to die.

A psychedelic tribute to one of Georgia's most unique artistic visionaries, out of place and time in the heart of Atlanta.

A fascinating aviation museum where you can chat with the veterans who once flew the aircraft on display.

After just one epic test blast, this literal loose cannon proved too explosive for combat.