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.

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."