Historic fortifications form the boundary of Vatican City, but it’s not entirely surrounded by walls.

Hidden beneath the famous St. Peter's Basilica is a veritable city of the dead that may hold the remains of St. Peter himself.

A little sculpture with a large wardrobe.

Christ's blood preserved in a Belgian town.

This fairytale castle was built as a show of power but was nearly torn down thanks to its history of torture.

This narrow Ghent alleyway is an officially sanctioned street art tunnel.

The extravagance of Portugal’s "Pink Palace" resulted in a noble title being awarded to its owner.

This small chapel is built of human bones and decorated with a golden skeleton.

Go back 50 years with a turn on one of the park's carefully restored vintage fairground rides.

This huge coastal nature reserve in Wales was a stand-in for the Arabian Peninsula in 'Lawrence of Arabia.'

Stroll through Welsh history in a village of reconstructed structures.

The castle still holds traces of the abandoned Roman fort it was built atop.

Recently restored menagerie of Victorian-era beasts.

This pedestrian walkway cuts through a cemetery and over several burial vaults.

An impromptu shrine appeared shortly after beloved "Torchwood" character Ianto Jones was killed off the show.

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

The largest of only eight working transporter bridges left in the world.