A patriotic medieval knight in driven-nail armor raised money for widows and orphans of WWI.

An exquisite Baroque church in Vienna's old town.

The solemn exterior conceals an opulent interior of this 17th century church.

This series of Baroque passageways in Vienna's cultural center mix old architecture with modern art.

Built to give thanks for the passing of a plague epidemic, this cathedral is a one-of-a-kind architectural hybrid.

This Slovak bridge is known both for its connection to a national uprising and its UFO-shaped eatery.

A peculiarly shaped brass sculpture hidden in a courtyard in central Lviv

The deepest metro station in the world.

A monument to Lenin has been transformed into a statue of everyone's favorite black-helmeted, fool-choking Sith Lord.

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

This beautiful natural train tunnel is said to grant the wishes of visiting lovebirds.

This attraction was abandoned after the Chernobyl disaster.

The ghost town left by the worst nuclear disaster of all time is being taken over by nature and urban explorers.

This derelict superstructure was a very important warning system for the Soviet military.

The clothes-washing king doubles as a community center with some unusual features, including an aviary filled with finches.

An unassuming store hides relics of its former life as the jazz club that hosted some of the best black performers of the 1920s and '30s.

These chunky stone towers out in Lake Michigan are the key to Chicago’s drinking water.

A lush green oasis in the middle of Chicago.

Where old school Polish Chicago and young hipster Chicago live side by side.

A giant bronze coil of feces is both a tribute to doggie defecation and a reminder to pick it up.

A monument to the art of slicing people open.

This memorial plaque remembers a strangely shallow maritime disaster known as "Chicago's Titanic."

This massive stained-glass masterpiece is thought to be the largest Tiffany dome in existence.

The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.