The Cathedral of Salamanca has a number of unusual carvings but none so surprising as a modern astronaut.

These magnificent city walls rise from the barren sun-baked Spanish plains like something straight out of a fairytale.

An exact replica of a colossal Olmec head sits atop a pyramid within a Madrid traffic circle.

These mysterious ancient stone spheres were created by a civilization lost to time and are now mostly lawn ornaments.

A unique botanical garden housed in three giant geodesic domes.

Robots, lasers, and whoopee cushions, oh my!

Abandoned Italianate architecture on the coast of Maine.

The steel hull of a wrecked tug rests on Lobster Cove on Monhegan Island’s rocky southeastern shore.

This 1,700-pound edible sculpture is way better than your average chocolate mousse.

Trinkets and toys lovingly handmade by maximum security prisoners.

The world's oldest and largest museum of mass transit vehicles.

Turns out you can see the world without ever leaving Maine.

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

Maine's oldest diner also happens to win acclaim for its elevated comfort food.

A beautiful Gilded Age hotel in the White Mountains with surprising diplomatic history.

Explore the dark underground corridors of this graffiti-covered former military fortification.

Its unique collection details the history of the state's svelte railroads.

Accessible only by boat, this centuries-old island fort never saw troops or combat.

The only remaining historic maritime signal station in the United States.

An unusually designed bridge from the 1920s was built to withstand the tides and winds of Maine.

This museum on a college campus pays tribute to the Arctic and to two explorer alumni.

The world's largest rotating world.

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

This tiny patch of arid sand sits in one of the greenest states in the United States.