The site of many tense prisoner exchanges across the Military Demarcation Line between North and South Korea.

A monument to the two U.S. officers killed by North Korean troops while trying to trim a poplar tree.

A significant example of Czech cubist architecture—a style you won't find anywhere else in the world.

This Czech church doubles as something of a permanent fashion exhibition for a statue of the Infant Jesus.

Throughout this shopping mall are medieval ruins that were discovered during the mall's construction.

A surreal statue honoring Prague's favorite literary son.

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

Increasingly decayed figures stand as a powerful reminder of the human costs of Czech Communism.

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

What looks like a crashed Zeppelin is actually a bright, airy reading room perched atop a modern museum.

This Prague museum collects brutalist relics and memories from the country's former Soviet rule.

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

A bust of Franz Kafka spins in pieces, reflecting the writer's inner torment.

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.

A Jenga-style cylindrical tower of books that appears to go on forever.

A symbol of hope, survival, and national character, especially after it rose phoenix like from the flames.

Home to more than 13,000 pieces of war memorabilia and military equipment.

A family of distorted sculptures stands outside Seoul's former imperial palace.

Former self-sufficient mental institution now a planned community.

A charming remnant of 19th-century fishing towns sits on Michigan’s Leelanau Peninsula.

The fourth-oldest baseball stadium in the United States is in a league of its own.

A muscular Art Deco monument represents the struggle between regulators and unbridled markets.

The 5.5-mile ring of steel posts around the Capitol Building is one of the largest (and most uniform) of its kind in the world.