A bronze monument to Cleveland's favorite, fastest son.

A wonderful and easily overlooked museum tucked in Ohio's Burke Lakefront Airport.

Cleveland's giant "free" stamp is a nod to the Civil War, but was misinterpreted for years.

A collection of 20th-century automata, penny arcade games, and musical contraptions.

A huge work of Burning Man-inspired outsider art on the grounds of a California winery.

Elaborate tile work in this railway station tells the story of Portugal.

This restored Portuguese cafe may well be the most beautiful place in the world to grab a Big Mac.

A century-old factory reborn as an artist-run live-work building.

This plaque commemorates the call between Alexander Graham Bell and Thomas A. Watson.

Just like in Hollywood, Madrid has also a forgotten walk of fame.

Madrid's romantically ornate crystal palace has been offering shelter to plants and art for over a century.

Part of the medieval watchtower is displayed in an otherwise ordinary parking garage.

After the queen of Spain had a dream where these statues fell and crushed her, they were removed from the palace and given new homes around Madrid.

One of Madrid's most beloved statues is of an anonymous citizen.

A rare set of strings by famed instrument maker Antonio Stradivarius is on display in the Royal Palace.

This vast collection of smoking pipes from across the world spans centuries.

Europe's official "zero-level," the equator of elevation.

A Dutch passageway's artistic, aquatic-themed makeover pays tribute to the capital city's famed waterways.

This historic Amsterdam bar used to accept sailor's monkeys as payment.

In 1988, jazz legend Chet Baker fell to his death from a window of this hotel facing Amsterdam Centraal.

This 22-floor tower's Skydeck offers panoramic views of Amsterdam.

Established in 1638 to battle the Black Death, this botanical garden is a treasure trove of rare flora.

A beautifully eclectic mix of architectural styles.

Famed for its pie, this eatery has a hidden tunnel that allowed Catholics to secretly walk to church during the Reformation.