The angel of death appears to weep black tears at this grave marker.

At least seven hues of blue and turquoise make this freshwater lagoon unique.

Also known as the Temple of Poseidon, this is one of the best-preserved Greek temples in the world.

The only visible remains of this ancient Greek underground temple is its roof protruding from the earth.

This amazingly well-preserved villa just outside Pompeii boasts rare examples of ancient Roman paintings.

The walls and streets of the ancient city are peppered with penises.

Buried next to Pompeii, this lesser-known Roman villa was the opulent vacation home of Emperor Nero's wife.

Though it's not the largest, this one-kilometer outdoor market is reportedly the longest in Europe.

A living maritime paradox still floats in the same lake where it was built and resurrected... or was it?

A quirky collection of outsider art made from automobile parts.

Europe's second largest ossuary wasn't discovered until 2001.

One of the oldest, well-preserved water treatment facilities in all of Europe.

This Prague museum collects brutalist relics and memories from the country's former Soviet rule.

A crucified and bearded female saint.

Underneath this small church are 15,000 bones, arranged by an obsessive academic.

Two monstrous faces loom over a village in Czechia.

An enormous and lavish Gothic church in Czechia.

Legend says this sacred tree was a gift from goddess Athena.

Heralded as the world's first theater, these ruins are often overlooked as they reside in the shadows of the Acropolis.

A much-loved sculpture depicting the hero of a 1956 anti-Soviet uprising.

Uh, pardon me, ma'am, but I couldn't help noticing that there's a Columbo statue in the middle of Budapest.

Budapest's Communist-era statues, banished to the suburbs.

A museum in the childhood house of a medical pioneer.

Time stands still at this serene burial ground in the center of Budapest.