This saltwater swimming pool, which is the last of its kind in the United States, is slowly crumbling within sight of multiple high-end beachside hotels.

Tour the world's largest deep-hole dimension granite quarry, where you can view the plant where gravestones are made and roll a ball down the outdoor granite bowling alley.

What was once believed to be a church floor turned out to be the artwork of geology.

Literally a million fascinating cartographic artifacts are held in this sprawling university collection.

This titanic java kettle is one of the many kitschy landmarks located along America's OTHER famous highway.

A centuries-old forgotten underworld lies beneath Malta.

A Seussian sculpture made of brass instruments.

Dine on ceviche tacos in the sea at this floating restaurant only accessible by boat.

The Decoy Capital of the World.

This former farm In northern Iceland is now a museum, where visitors can tour beautifully-preserved turf houses.

Low tide reveals 8,000-year-old rock carvings in Southern Alaska.

This historic lighthouse was well known for the large number of women who served as its keeper.

The oldest bar in Missouri is hidden within a limestone brewery cellar more than 50 feet underground.

At this small shop off a dirt road in the forest, the specialty is eel the owner caught and smoked himself.

Instead of solid circles, the stoplights in this northern Icelandic town have glowing red hearts.

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

Kuwait City's uniquely designed water towers look straight out of a retro sci-fi cityscape.

A small island dotted with old, historic Finnish buildings.

This enormous "cloth of the conquest" depicts the Norman invasion of England in mind-blowing detail.

This beloved Baltimore spot features caged dolls, a giant Pez collection, and many, many mannequins.

This tremendous timepiece was once the largest cuckoo clock in the world.

This metal tower in the desert provides views of a handful of Nazca geoglyphs.

This recreation of a 19th-century dime museum is full of oddities.

It marks the spot where the high-ranking British officer died during the Falklands War.