The old observatory in Copenhagen has a spiral corridor used as a racetrack.

A memorial to 350 people burned at the stake for witchcraft.

A 10-meter totem pole stands as a tribute to Seattle’s sister city of Bergen, Norway.

In a city of wooden houses, this watchtower was vital for early fire detection.

One of the last surviving C-97s sits in a field in front of a Wisconsin inn.

A bizarre house filled with an astounding array of collections.

A UFO scrapyard in the California desert.

This bronze sculpture was inspired by a photograph of Martin Luther King Jr. and his wife embracing after he won the Nobel Peace Prize.

Created by a local artist, these quirky sculptures each have their own names and personalities.

When the town wouldn't allow the fast-food behemoth to build a new restaurant, they put one inside an 1850 home.

The world's largest rotating world.

This is the sewer drain that was the inspiration for the opening scene of Stephen King’s classic novel “IT”.

This 1.5 million-gallon water tower inspired Stephen King while he was writing "It."

This Art Deco theater is the last remaining opera house in the “little Broadway of the North.”

This handsome giant is said to mark the birthplace of the mythical woodsman and even had a cameo in a Stephen King novel.

High atop the Eiffel Tower is a small apartment built exclusively to entertain the science elite and make the rest of Paris jealous.

Paris' linguistic guide to the international language of, yes, love.

The site where two doves fell in love.

What looks like a normal building is really a hollow facade hiding a subway vent.

The ruins of a medieval monastery named after a type of tree.

This 19th-century prison once held Irish revolutionary Constance Markievicz, writer Frank O’Connor, and a nine-year-old pickpocket.

Horse cemetery on the grounds of Blarney Castle.

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.