At more than 5,000 years old, these structures are among the oldest free-standing stone buildings in the world.

The ruins of a megalithic monument sit right in the garden of a luxurious Maltese resort.

These lesser-known Maltese catacombs date back over 1,700 years.

A World War II-era sign in Valletta is a reminder of when Malta was besieged so severely that food needed to be rationed.

This church is named for one of the most dramatic tales in the early Christian church.

The floor of this spectacular Baroque sanctuary is covered in memento mori.

Rub it for a bit of good luck.

A miraculous three-handed portrait of a saint can be found inside this church.

Travelers who fall victim to this mermaid's charms are destined to stay in Užupis forever.

Legend has it that Napoleon Bonaparte fell in love with this Gothic church.

The medieval prince founded the first library in Ukraine at Saint Sophia's Cathedral where he was interred.

Featured in one of the most iconic scenes in cinema history.

A system of constructed rapids and concrete waterfalls in a linear park on the Slepnya River.

A sculpture of graceful storks sits atop this fountain in Independence Square.

According to a gruesome legend, an architect sacrificed his wife to build this spectacular, 16th-century cathedral.

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

A vast Communist-era exhibition space in the Bulgarian capital.

UNESCO-protected ancient burial ground.

This tiny Bulgarian town offers a stunning location in the mountains and a storied history.

While not Turkey's deepest underground city, this subterranean redoubt is the largest.

This former Imperial summer home was the venue for a royal slap that once echoed 'round the world.

Legend says if you stick your thumb in the hole and it gets wet, your wish will be granted.

A section of the long chain that blocked enemy ships from entering Constantinople.

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