The perfectly preserved underground rooms where Churchill plotted the war against Germany.

An ancient Viking runestone hidden in plain view in Stockholm's old town.

Stockholm's tiniest statue is of a small boy looking at the Moon.

Less a museum than a bizarre fantasy world created by artists and engineers.

Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.

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

Performers, intricate sets, and a real speakeasy tell the story of the 18th Amendment.

This kitschy tavern is also home to rare early editions of "Treasure Island."

This kitsch eatery is chock-a-block with bric-a-brac.

With its webbed walls and bright red coloring, Calgary's iconic bridge looks like a finger trap puzzle stretched across the river.

Statue of Lenin, from Cold War era Czechoslovakia, now in a neighborhood of Seattle.

This sculpture forces visitors to confront their relationship with space.

Classic burger joint that’s been serving up sliders since 1952.

This was the first ever National Lakeshore, established in 1966.

Rising 30 feet in the air atop Quarry Hill, the Old Powder House is the oldest stone building in the state of Massachusetts.

Dozens of bronze glove sculptures symbolizing loss and life decorate a busy Cambridge subway station

The statue of John Harvard isn't actually John Harvard—or even, technically, the founder of the school.

A Harvard-area eatery preserves the uncovered tiles of its century-old predecessor.

This bridge was the birthplace of a unit of measurement based on a fraternity joke.

Narrowest house in Boston.

Tragedy on Little Brewster Island memorialized.

This mosaic commemorates the oldest subway tunnel and station in the United States.

City law dictates that this mountaintop cathedral containing the heart of a saint is to remain the tallest building in town.

Rusty red sands line the shores of this Canadian Province.