This 13th century Gothic brick castle is the largest in the world by surface area.

Over time, this castle grew to encompass the entire island.

The reconstruction of this prominent building fulfilled a long-written command.

This celebration of Latvia’s freedom and independence avoided demolition over half a century of Soviet occupation.

A creepy statue of a hooded ghost hauls itself up from the water in a historic Lithuanian city.

The secret meeting held in this building would forever change the world.

A beautiful and moving memorial set on a little island in the middle of the river in Minsk.

A sculpture of graceful storks sits atop this fountain in Independence Square.

Famed for its pie, this eatery has a hidden tunnel that allowed Catholics to secretly walk to church during the Reformation.

Three connected pink triangles memorialize persecuted gays and lesbians throughout history.

In the days before house numbers, these colorful signs held clues about various buildings' purposes.

The facade of this bank has changed little over the centuries, including its unique welcome sign.

A public urinal so pretty, it was declared a national monument.

An ancient passage filled with stalls selling used books, once frequented by Vincent Van Gogh.

This towering church is home to a world-famous organ and a treasure trove of medieval art.

Also known as the Blue Church, the building was consecrated to the daughter of Andrew II.

This massive underground salt mine now holds a sci-fi theme park in its depths.

Something's watching you.

A fire once nearly devoured this gorgeous 14th-century Gothic cathedral.

The European towns of Brașov and Râșnov each have proud signs reminiscent of the Hollywood sign.

The possible imprisonment of Vlad the Impaler here earned the medieval castle its nickname, "Dracula's Castle."

This hauntingly beautiful cemetery outside a medieval citadel is full of winding paths and ivy-covered graves.

Seventy-five miles of limestone caves host more than a million bottles of wine beneath a sleepy Moldovan town.

A forgotten remnant of the Soviet Union, Transnistria is an unrecognized country hidden behind a heavily militarized border between Moldova and Ukraine.