It's not your typical library, memorial, or book store.

This replica of the Greek structure is in the heart of Nashville.

Impossibly life-like natural history models created out of glass by a father and son.

A museum dedicated to the alleged Roswell Incident.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

A collection of 20th-century automata, penny arcade games, and musical contraptions.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

A huge musical instrument played by the ocean.

Picnic on the seashore in the footsteps of ancient kings, protected by giant mythical cat beasts.

This statue was given to France by the United States to commemorate the centennial of the French Revolution.

Possibly the world's only drive-in movie theater with an attached motel.

A desert ghost town—occupied for only 12 years—was once home to more than 500 silver mines.

Earth's tallest volcano is sacred to Native Hawaiians, and home to a dozen world-class observatories.

This historic address is home to the beloved ball and is an almost totally empty building among the most expensive real estate in the world.

Massive prehistoric mammals used these stones as oversized scratching posts.

Legends surround this jagged rock formation in the New Mexico desert.

A man-made island in scenic San Francisco Bay.

Scattered throughout London are ancient remnants of the city's former bounding wall.

The site where Charles Dickens gave his first public reading of "A Christmas Carol" in the US.

The 340-year-old house that inspired the classic Nathaniel Hawthorne novel.

Famously misunderstood wonder of the ancient world

Tibetan-influenced mountain fortress in Northern Pakistan.

A plaque marks the site directly below the mid-air detonation of the atomic bomb over Hiroshima.

Go inside to really appreciate this 500-year-old technological masterpiece.