This giant urban staircase was built to keep the city's brave fighting men from getting waylaid in the red light district.

Dine on food tied to Viking history and legend at this subterranean Stockholm spot.

In 1787, a group of delegates met at this very spot to drink, be merry, and ratify the Constitution of the United States.

A cone-shaped top and cylindrical body set this 900-year-old structure apart from other Italian bell towers.

These unusual houses look like giant boats that washed ashore on a residential street.

This surreal-looking tree pruned more than 1,000 years ago is still producing olives for oil.

A collection of miniature, symbolic sculptures hides in plain sight across Kyiv.

This medieval manor house was equipped with secret compartments for hiding priests.

To enter the lower hall of this temple, you must first walk through a dragon.

This magical-looking island is notorious for the misfortunes suffered by its owners.

This unusual elevator doesn’t stop or slow down.

The bridges portrayed on EU currency aren't fictional anymore.

Rare recess caves fill this unbelievably beautiful Ohio park.

A tiny, remote island packed with wonders both natural and geeky.

The largest permanent Monopoly board makes one of the longest games even bigger.

Terraced flowerbeds and rock sculptures in the midst of the Minnesota wilderness.

Visit this playground of waterfalls, caves and sinkholes.

A volcanic landmark located on an Ice age lake bed.

For thousands of years, Native American hunters drove buffalo straight off this cliff in Montana's Yellowstone Country.

Curious rock formations in a tiny Kansas state park.

Aqueducts have dramatically changed this old lake, now home to tufa towers and its very own species of tiny brine shrimp.

Curious cave that stays a cool 56 degrees all year long.

This quiet park's strange sedimentary spires were named after Kodak's color film.

This narrow canyon has been carved by the river over thousands of years into spectacular and curious forms.