An 18th-century Spanish watchtower made entirely of seashell and concrete.

A luxurious 1880s hotel with its fair share of Tiffany stained glass, Edison electricity, and of course, ghosts.

A massive sea stack famous for its appearance in The Goonies.

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

On the Oregon coast is a natural hole that seems to be draining the sea.

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

FDR hoped to find a cure for polio in this Georgia town's warm springs.

This abstract roadside poultry was saved from demolition by outraged drivers and pilots.

A vision of beautiful Hindu architecture in the middle of the American South.

Constant erosion has created a surreal landscape of bleached and preserved fallen trees.

This natural wonder is disappearing at an alarming rate.

A surviving remnant of the thick ice mass that once mantled most of Western Canada's mountains.

Few other hotels can rival the grandeur of the Castle in the Rockies.

A natural swimming hole that was once a ceremonial center for Mayan priests.

An important Mayan religious and trading center dating back to 200 BC.

At 8,000 feet, the world's highest tea estate draws visitors for both its products and its panoramic views.

Rock-cut cave complex filled with ancient Buddhist artwork.

This complex of vertically-excavated Buddhist, Jain, and Hindu monolithic temples in India's Maharashtra providence illustrates a spirit of tolerance characteristic of ancient India.

The mysterious empty cupola behind the monumental arch points to an ancient prophecy of Delhi.

An ancient iron pillar in Delhi that seems to be rustproof.

This $62 million dollar temple was erected to house one little dental fragment of religious history.

The largest pool at its elevation sits on top of one of the most expensive resorts in the world.

Singapore's landscaping project is home to 18 incredible Supertrees.

The celebrated eyesore created by starry-eyed sweethearts.