A monument dedicated to a lone, brave invader.

This medieval castle is filled with an eccentric collection that ranges from ancient Egyptian artifacts to taxidermy to a mummified hand that was cut off during a duel.

This giant sculpture made of trash is a critique of society's wastefulness.

This Industrial Age architectural and engineering gem helps visitors and residents alike traverse Lisbon, “The City of Seven Hills.”

Once an opulent Art Nouveau hotspot, the Constanța Casino is one of Romania's most beautiful abandoned buildings.

This quiet, unassuming spot in Budapest was the birthplace of the bloody 1956 Hungarian Revolution.

A Trabant car, a kangaroo statue, and a plethora of plants take over this abandoned-factory-turned-bar.

This Hungarian castle was built out of cardboard and wood until it proved so popular that it got upgraded to stone.

One of the most historic cemeteries in Quito is an eclectic mix of architectural styles and famous tombs.

This overlooked, beautiful convent hides an original Hieronymus Bosch among its many treasures.

This small-town pizzeria won the Hollywood lottery.

Hungarian Jews were ghettoized during the Second World War, but little remains of the original wall that closed the Jewish people off from the rest of the city.

A plaque bearing the names of those who dedicated themselves to protecting Budapest's Jewish population during World War II.

A relic of World War I that now exist as a piece of public art.

This Budapest bar allows drinkers to leave their mark on the walls, floor, and even ceiling.

In an area known in Bratislava’s postal history, this sculpture sits equipped with a functional postbox.

A sculpture of the beloved author surrounded by characters from his fairy tales.

Launched by Napoleon's soldiers more than 200 years ago, a cannonball remains embedded in the tower wall.

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

Thousands of slain Soviet soldiers are buried within the shadow of this enormous obelisk.

This Slovakian statue of an emerging sewer worker might just be a bronze peeping tom.

Baroque celebration of the end of the Great Plague of Vienna.

In the middle of a Vienna square, Roman ruins dating back some 2,000 years are on display.

The Corinthian columns that towered over Abraham Lincoln’s inauguration stand proud.