A dismembered holy head stares out from her beautiful reliquary at the St. Dominic Basilica.

Rebuilt several decades ago, its striking murals prevent it from being reconsecrated as a church.

The mystic whose incorrupt corpse still attracts the faithful.

At the crypt of St. Mary of Eulogies and the Dead you are left alone to ponder mortality among piles of skulls.

If you want to talk to the Pope you will have to stare down this surreal vision of Jesus rising from a nuclear hell.

An unremarkable wooden wheel built into the side of one of Rome's oldest hospitals was part of a policy to reduce infant exposure.

This equestrian statue of Constantine the Great has been the subject of criticism for centuries.

The Italian revolutionary's legendary wife is portrayed on horseback waving a gun and holding her child in this memorial on the Janiculum.

One Portuguese poet described this cape, the westernmost point in mainland Europe, as "where the land ends and the sea begins."

The corpse bride of Portugal.

The medieval castle built as headquarters for the Pope's secretive Knights Templar.

Two stone columns flank the grand Venice square, but there were supposed to be three.

Go inside to really appreciate this 500-year-old technological masterpiece.

This ancient trail climbs the mountain where a Latin League cult worshipped Jupiter, its main deity.

This little medieval church hidden in the center of Yerevan was lost and rediscovered—twice.

A geological oddity topped with a 2,000-year-old pagan temple.

This Armenian monastery was carved out of cliffs and named after the spear used to stab Jesus.

With over 10,000 lights, this engineering marvel lights up the city after dark.

The charmingly disheveled clock tower of Tbilisi's puppet theater.

Built to repay the sins of the father, this church is home to one of the most valuable works of Western art.

One of the world's oldest working clocks is curiously missing the Zodiac sign of Libra.

One of the largest squares in Europe contains an entire artificial island.

The incorrupt tongue of the patron saint of lost things is venerated in this basilica.

Taking the subway here means doing so over a bridge located in the middle of an estuary.