This one-time health resort was used by aristocrats around the world.

One of the best-preserved Roman amphitheaters is still used today, but for less brutal events.

This hollow steel globe is the second-largest in the world.

A curious collection of oddities including a lock of Alexander Hamilton's hair and Harry Houdini's ouija board.

Garden dedicated to native carnivorous plants and site of huge flytrap heist.

One woman's UFO-themed campground, complete with self-built energy vortexes, UFO-themed weddings, and magic bushes.

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

This tea house was a hand-built gift from Boulder's sister city in Tajikstan.

Paranormal experiences in this hotel's room 217 led Stephen King to write "The Shining."

These eerie outliers of the lightning bug family glow a mysterious blue color.

Classy up your Big Mac with bow-tied servers and chandeliers at the world's fanciest McDonald's.

Chef Ashleigh Shanti serves up a classic Appalachian fish fry.

Sculptor Vadim Bora's bronze felines pay playful homage to architectural features no longer extant along Asheville's Wall Street.

An Aztec temple, the largest man-made pyramid in the world, sits buried in earth with a Spanish church set on top.

The first public library in the Americas has more than 45,000 books dating back to the 15th century.

The splendor of this 17th century golden chapel has led it to be called the "eighth wonder of the world."

A 500-year-old series of tunnels long believed to be folkloric was uncovered beneath the streets of Puebla.

A replica of the home of a famous fictional troll family.

Spanish architects used seized Muslim gravestones to rebuild parts of the fortress.

A curious carving hides on a marble column in the Mosque-Cathedral of Córdoba.

This sweet-toothed bear searching for snacks has been a symbol of Madrid for decades.

One of the most spectacular bridges in Spain spans a narrow chasm that divides the city of Ronda.

Three bridges and one giant canyon make up this fantastic Spanish settlement.

The legendary giant's severed hand sits on Antwerp's popular shopping street.