Inside this McDonald's you can dine on your Big Mac and fries next to a 2,500-year-old Roman wall.

The only "Egyptian" pyramid in Europe and the legendary tomb of Remus.

The ruins of the largest gladiatorial school in Rome are largely hidden under modern streets.

Architectural monsters are devouring this palace's every door and window.

Plaques on its facade commemorate the Tiber's most destructive deluges.

A burial vault located under Tiber Island in the middle of the Italian capital.

According to a satirical conspiracy theory that persists today, this German city of 300,000 is a hoax invented by the CIA.

Twisted trees shaped by coastal winds make this woodland look like something from a spooky story.

This jaw-dropping 19th-century bridge uses its reflection to form what appears to be a perfect circle.

A collection of old neon signs from all over Poland line a secluded courtyard.

The silly symbol for an underground protest group is now scattered around the city.

Created as a "model concentration camp" to hide Nazi atrocities from the international community, this former camp-ghetto now holds a museum and memorial honoring the lives lost within.

The oldest garden in Prague, once part of an medieval orchard.

Synagogue built from the stones of Solomon's temple contains the golem of Prague.

Throughout this shopping mall are medieval ruins that were discovered during the mall's construction.

Straight out of a nightmare, barcode-faced babies climb up and down Prague's television tower.

A surreal statue honoring Prague's favorite literary son.

Looming communist pillar with a Czech twist.

Walk through Czech history in Prague's largest graveyard.

This walkway is so narrow it needs its own light to stop pedestrian traffic jams.

This automated sculpture of two men peeing will spell out text messages with their micturition.

A Jenga-style cylindrical tower of books that appears to go on forever.

What looks like a suicide in progress is actually a statue of Sigmund Freud.

This incredible stone temple is a monument to death, victory, and fantasy architecture.