Two geological phenomena in one precarious locale: a towering stone window, and a deep blue void.

The eclectic seaside sanctuary caters to a rather fowl crowd.

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

The fishing boats that moor in this small lagoon enter and leave through a tunnel to the sea.

This spectacular dome managed to survive after being bombed in World War II, in an event known as the "Miracle of Mosta."

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

Burial grounds for more than 1,000 bodies deep under the modern town of Rabat.

An abandoned set from the 1980 film "Popeye," claimed and repurposed as a theme park by creative locals.

The legendary giant's severed hand sits on Antwerp's popular shopping street.

Rusted structures stand like ghosts of Cyprus' 6,000-year-old copper industry.

The largest caravanserai in Cyprus also includes amazing examples of Ottoman architecture.

This medieval wine press is one of the oldest in Cyprus.

This no man's land slicing through the island is strewn with abandoned relics of another time.

The ruins of a fairytale castle with a tumultuous history stand high atop the mountains.

A magical museum of fairy tale treasures near Cyprus' buffer zone.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

The mummified right fist of a 1,000-year-old saint-king sits inside an ornate golden reliquary.

From Austrians to Nazis to Soviets, this historic Budapest fortress has a history as complex as the city itself.

Museum dedicated to the terror regimes of Hungary.

Built in 1870 at the bridge that connected Buda and Pest, this spectacular incline railway was almost lost forever during World War II.

This Hungarian castle was built out of cardboard and wood until it proved so popular that it got upgraded to stone.

The yawning maw of this pagan visage is said to bite off the hands of liars.

150 or so scrounged-up lamps, chandeliers, and lanterns light up this alley in central Athens.

The oldest standing Byzantine church in Athens is tucked within a monastery in the middle of an upscale shopping district.