A small part of lower Manhattan is actually made from a bit of England.

The legendary cliffside castle of three-time Voivode of Wallachia, Vlad the Impaler.

A hundred copies of Antony Gormley's naked body stare out across the water.

Row, row, row your pumpkin quickly down the stream.

This charming colonial alleyway is one of the oldest continuously used residential streets in the U.S.

The remains of a 37,000-year-old prehistoric society were discovered in this mammoth cave, one of the largest in Asia.

This little gem in the Gulf of Riga has a very rich heritage and distinct culture.

Aqueducts have dramatically changed this old lake, now home to tufa towers and its very own species of tiny brine shrimp.

At the right time of day, sunlight floods through the roof of this cave and illuminates the small pavilion hidden within.

An ancient Incan convent on Lake Titicaca's Island of the Moon.

A beautiful and abandoned New York subway station from 1904, complete with chandelier.

Rome's semi-secret peephole vista is also a former Crusader stronghold.

A small island less than half a mile from Venice is a forbidden island with a dark and twisted past.

The body of one of the world's most famous outlaws is covered in cement and iron to prevent it from being stolen.

This prehistoric sinkhole lured exclusively male mammoths to their death, much to the delight of science.

This grave marks the final resting place of a legendary frontiersman... unless it doesn't.

Stenciled handprints and wall paintings dating back 10,000 years, some of the earliest forms of cave art.

Britain’s longest ancient monument, this great 8th century earthwork was built to mark the boundary between what would become England and Wales.

This no man's land slicing through the island is strewn with abandoned relics of another time.

Here, at the "world's longest art gallery," you'll find forty miles of ancient petroglyphs and pictographs.

A submerged archeological park still holds the wonders of a Roman Sodom.

17th century streets hidden under Edinburgh were once a breeding ground for the black death.

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

The only theatre in the world constructed specifically for sound movement.