What appears to be an ancient Roman temple is actually a Catholic church.

An 18th century fountain and two columns are all that remains of Rome's forgotten river harbor.

This triumphal 16th-century arched gateway leads to the oldest street in Palermo.

The titular "little arch" near this Italian resort is one of the most popular diving spots in the country.

This bustling Italian plaza is built on the ruins of an ancient Roman amphitheater.

It’s said this crypt was the setting for the tragic finale of the Shakespeare play.

The only visible reminders of an elaborate engineering project that kept the tower from reaching the tipping point.

Cave shrine on Monte Pellegrino.

Fortified medieval tower house with lovely roof garden.

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

These medieval skyscrapers dominate the skyline of this small Tuscan town.

Erotic art covers the walls of the largest ancient pleasure palace.

A hospital where antique dolls are given new life.

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

Ancient snack bar of the Roman Empire re-opened.

Pilgrimage site for star-crossed lovers.

The inverted pyramid design of this station stands out amid Bratislava's urban landscape.

The largest fountain in Bratislava.

Climb around the high waterfalls on series of iron ladders and bridges within the wildest gorge in the Slovak Paradise.

One of the largest museums in Ukraine remembers the story of the German-Soviet War in iconic, brutalist style.

This derelict superstructure was a very important warning system for the Soviet military.

A reconstructed medieval gateway that was the magnificent entrance to the capital city dating back to 1037.

Flying high over the small island of Zákynthos is a giant tribute to the mainland.

A magical, if a bit tacky, 1960s castle conjures up medieval fairytales and Greek mythology.