St. Mary's features one of the most spectacularly decorated cathedral interiors in all of Europe.

An amazing collection of curiosities hidden in a small Welsh village.

A hermit's tiny cell built into the cliffside that saved him in South Pembrokeshire.

This Roman amphitheater is said to be King Arthur's legendary Round Table.

One English town's celebratory landmark spurred more trouble than anticipated.

A whimsical bridge adorned with decorative dragons.

This abandoned Slovenian military barracks has become a punky-political art squat.

Once one of the world's great cities, Cahokia was a place of religious worship, trade and mass human sacrifice before being mysteriously abandoned.

This mosaic-covered bar is brimming with curated curios.

A small collection of iguana-infested ruins hides amid Cancún's bustling hotel zone.

An island graveyard with spectacular views of the Caribbean.

Every equinox this Maya pyramid puts on a spooky ancient light show.

Climb a set of vertiginous stone steps to the top of this impressive ancient edifice.

The plaques around this 19th-century structure recall some rather strange tales.

Local lore says passing infants through its holes could magically cure them of measles and rickets.

A 200-year-old prison that now houses a peculiar crime museum.

On this wooded path, a stained-glass window creates a spellbinding forest cathedral.

Museum about life, death, and cannibalism in the Stone Age.

This hilarious English intersection is an automotive whirlpool.

It's possible to walk inside one of the largest Neolithic tombs in Britain.

The largest stone circle in the world has ended up bringing up more questions than it has answered.

The only pub in the world surrounded by an ancient stone circle.

Europe's largest prehistoric mound – burial site of a legendary king?

This picturesque horseshoe weir was first built in the 1600s to prevent flooding in the town of Bath.