A steampunk airship "floats" above Hamilton Gardens delivering plants and compost.

These two delightful animal-shaped buildings host a visitor center and wool shop.

Handcrafted thermal spa washes away each night with the tide.

Major tourist destination known for its bubbling mud-pools and hot thermal springs.

The real life Hobbiton, this sheep farm has been forever transformed since being built for The Hobbit film series.

The "Rocky Horror Picture Show" character has a hidden camera that broadcasts people doing the "Time Warp."

New Zealand's west coast is one of the best places in the world to view these large seabirds.

A galaxy of glowworms—larvae of a gnat—hides deep in the belly of these caves.

Tubing through a cave lit with glowworms is a magical underground experience.

This lab's maddening silence is good for business but bad for sanity.

The Midwestern United States' tribute to Michelangelo is a foam statue sprayed with gaudy gold paint.

The oldest operating Mississippi River–style steamboat still navigates the Ohio River.

This 19th century mansion façade adorned with immigrant patriotism is a symbol of Louisville’s history.

This abandoned cemetery has a dark past of bodies buried over bodies.

One of the greatest boxers and humanitarians to ever live chose his hometown as his final resting place.

A turn-of-the-century architectural marvel built on healing mineral springs and salt licks.

This candy shop has been serving up sweets to the Louisville area since the 1850s.

A historical home in upstate New York honors the work of John W. Jones, a formerly enslaved man who was a major agent for the Underground Railroad.

The wooden octagon in which Huckleberry Finn and A Connecticut Yankee were born can still be visited in upstate New York.

The little-known final resting place of one of America's greatest writers.

Experience the hysteria of a 17th century witch hunt through goofy reenactments and wax dummies that should probably be burned at the stake.

Located just behind a quiet residential neighborhood, this is ground zero for the Salem witchcraft hysteria of 1692.

The only one of New Hampshire's original 14 World War II watchtowers to survive in near-original condition.

The once-abandoned 140-year-old hotel used in the movie "In Dreams."