This Roman arch marks the location of an ancient gate at one of the Seven Hills of Rome.

Before it was buried by volcanic ash, this fast-food restaurant fed the hungry hordes of ancient Rome.

The last moments of the ill-fated Pompeiians, frozen forever in plaster.

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

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

Ancient snack bar of the Roman Empire re-opened.

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

Daily jousts and dancing barrel makers in Munich's mechanical clock.

This beautiful 19th-century temple stands atop the ruins of its predecessor.

The prototype for all Nazi concentration camps.

This small Bavarian graveyard is filled with empty graves for German soldiers lost during the World Wars.

Soaring over 6,000 feet in the Bavarian Alps, this beer garden was once Hitler's 50th birthday present.

Originally envisioned by King Ludwig II to rival Versailles, Herrenchiemsee's "New Palace" remains half-gilded for lack of funds.

This tipsy office building in downtown Prague was originally called “Fred and Ginger.”

Bullet holes in the church wall are a reminder of the violence that followed the assassination of a high-ranking Nazi officer.

Macabre astrological automaton clock dating to the late 1400s.

The slender brass strip in Prague's Old Town Square was used to tell time from 1652 to 1918.

This spooky statue sits outside a famous Prague theater.

The hidden lair of an alchemist rediscovered in a 2002 flood.

Steadily reminding Czechia of its past.

The 1936 Summer Olympics site is a crumbling remnant of sportsmanship and a history its host country would like to forget.

The ship built to ferry passengers and goods to the doomed Titanic is now the last remaining White Star Line vessel.

This little-known Revolutionary War fort is supposedly haunted by the ghosts of its past.

This old-fashioned carhop restaurant gave the world the waffle cone.