A statue commemorate Tommie Smith and John Carlos's brave protest at the 1968 Olympics, a watershed moment for civil rights.

The only remaining historic maritime signal station in the United States.

The world's only international cryptozoology museum is host to an unrivaled collection of mysterious objects.

A mural of a boy making a phone call connects a southern Maine community to a town in Iraq.

Maine's oldest diner also happens to win acclaim for its elevated comfort food.

An engineering wonder at Pillnitz Castle protects a precious 230-year-old flowering shrub.

Slaughterhouse Five opens its dank doors to fans of Kurt Vonnegut.

A museum dedicated to the history of a terrifying secret police is now held in their former headquarters.

A memorial in the Tiergarten is a reminder of the suffering inflicted on homosexuals by the Nazi regime.

The 1852 novel "Uncle Tom's Cabin" lends its name to a subway station, a street, and several shops on the edge of Berlin.

A controversial artwork draws attention to the dark history of Prague's "Suicide Bridge."

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

An Orwellian sculpture with eyeball cameras watches passersby.

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

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

An existential riddle in the world's largest ancient castle.

A mocking tribute to the past and modern leadership of Prague.

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

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

A sculpture of the iconic East German car on four legs is a tribute to those who traveled to Prague seeking asylum.

The risqué mixed-media sculptures are supposedly a metaphor for Czech politics.

A series of playful yellow penguins share a serious message about the environment.

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

You can climb to the summit of Black Mountain, as long as you sign the waiver.