A stone marker commemorating the first time sound was transmitted over wires.

The tallest outdoor elevator in Europe rockets passengers on a dizzyingly precarious ride to the top of a mountain.

No need to strap in for a "ride" on this walkable roller coaster.

This institution collects the history of burlesque dancing with a titillating collection of ephemera and pasties.

A towering, steel behemoth that has graced the skyline of Lakeland, Florida since the early 1980s.

These 100-year-old tunnels in downtown Provo house artists, restaurants, and a few surprises.

A perfect replica of the beloved show's first set.

A luxurious doomsday bunker hidden beneath an unassuming Las Vegas home offers the best of subterranean suburbia.

This collection of unique liquids allows visitors to wander the waters of Iceland's glaciers.

Home to the Titanic Historical Society's collection.

The American Revolution was galvanized into serious action due to the tragic clash with British soldiers that occurred at this location.

Enjoy an overnight at an old haunted B&B site of the Borden family murders.

A permanent outdoor art installation made up of more than 100 mushroom-shaped lights.

The final resting place of the world's first nuclear reactor.

A sculpture of the famous photograph stands on San Diego's "Greatest Generation Walk."

A massive rotating globe sits at the center of Babson Park.

Ever wanted to can Spam?

Explore a misty river canyon from a metal bridge system.

Possibly the most beautiful carillon in the world, set atop Iron Mountain in Florida.

Carved by a waterfall in a hard-to-reach rock formation, this heart-shaped rock has inspired romantics for decades.

This exhibit allows visitors to wander through the interior of a replica Ice Age glacial cave.

This massive metal sculpture in the shape of a folded paper airplane overlooks a Utah mountain.

This iconic 1,000-year-old medieval castle is a favorite of the film industry, most notably as the location for Hogwarts in Harry Potter.

The picturesque southern city served as the zombie-filled town of Woodbury in 'The Walking Dead.'