This massive tea kettle was once a promotional stunt for the Oriental Teashop.

The last of Amsterdam's original sea level markers remaining in place.

This unattributed sculpture in Amsterdam is hiding in plain sight.

The former home of a mad diplomat is said to still be marked in bloody, arcane scrawls.

An Amsterdam street lined with antique shops each one dedicated to a different obscure collection.

A set of seven houses, each built in a style that represents a European country.

This giant iron playfully pays tribute to an early 20th-century architectural trend.

You’ll feel like you’ve gone through the looking glass at this contemporary art museum filled with glass sculptures of every size, shape, and color.

This former factory has been transformed into a technicolor wonderland, where dozens of local artists have collaborated to create a real choose-your-own-adventure experience.

Thousands of Mexican Free-Tailed Bats soar around an abandoned storm drain at sunset each summer.

A monument celebrating the idea of reaching inaccessible places.

An octet of classic chrome trailers speared into the ground act as a tribute to the silver bullets of the open road.

Home to the deepest rift anywhere on Earth.

Tucked away on a scenic trail, a modest memorial honors one of the greatest writers of our time.

Traveling this mountain pass reveals quaint stone buildings, stunning Irish scenery, and a bridge said to grant wishes.

Ireland's most remarkable collection of these curious cone-shaped houses is worth the buzz.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

The ancient tomb acts as a calendar that keeps perfect time.

A Circus legend leaves an unexpected endowment.

A colorful, century-old cemetery of the Yaqui Indian Tribe hidden amid the suburban sprawl of Tempe, Arizona.

The unusual burial monument of Arizona's first governor.

Originally conceived as part of a proposed Arizona State Capitol building in the 1950s, this structure built in 2004 stands as a monument to the architect's legacy.

These falls, sometimes called the "Niagara of the West," still put on a good show at the right time of year.

Where the famed daredevil attempted to launch himself across a canyon in a custom-built rocket.