St. Mary's features one of the most spectacularly decorated cathedral interiors in all of Europe.

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

This ancient Greek place of assembly and marketplace is being revealed layer by layer below the modern Athens cityscape.

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.

Tiny communists hammer away on the Olomouc Astronomical Clock.

An ornate plague column – built to celebrate life – claimed the lives of numerous artisans during its construction.

A peculiar clock commemorates a historic victory won by ringing the noonday bell an hour early.

An enormous and lavish Gothic church in Czechia.

Be(w)ar(e) the moat around this historic Czech castle.

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.

Monument to a suicide protesting the Soviet invasion.

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

The palace window through which Protestant nobles flung two Catholic regents, thus sparking the Thirty Years' War.

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

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

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

Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.

Macabre astrological automaton clock dating to the late 1400s.

An imperial church bombed to ruins during WWII now stands as a jagged memorial.

The most visited, and possibly most controversial, museum in Germany.

The bones of the Biblical Magi traveled to Constantinople and Milan before landing in their current home inside an elaborate golden reliquary in the Cologne Cathedral.

Thousands of tourists and residents in Cologne affix "love padlocks" on the Hohenzollernbrücke Bridge to symbolize their affections.

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