America's post-nuclear-attack chambers of Congress.

A cult archaeology conspiracy theory claims these West Virginia petroglyphs were written by Irish monks in Ogham.

A tiny 1857 chapel sits on top of a secluded, forested hill.

Picturesque and haunting, these 160-year-old stone ruins on top of a bluff are the only remains of a settler's legacy.

Once the "Eighth Wonder of the World," this iron railroad bridge was decimated by a tornado.

When the Austin Dam failed it destroyed much of Austin...and then it failed again.

"Dark Sky Park" is heaven on Earth for astronomers, one of the rare U.S. locations with no artificial light pollution.

Shop of curiosities with a dinosaur museum tucked in its basement.

A unique sculpture park that specializes in the huge and bizarre.

19th-century operating theatre in which the use of ether was first demonstrated - plus, a skeleton and a mummy!

These millipedes glow not out of attraction, but as a not-too-subtle warning.

Neon signs that grace the windows of Bergdorf Goodman's and Tiffany & Co. come from this studio in Brooklyn.

This sculpture by artist Fritz Keonig survived the 9/11 attacks and now stands as a monument to the victims.

Though strikingly beautiful, Seattle's other railway station is now largely forgotten.

Essence of hound's tongue and tincture of bloodroot are just the tip of the herbalist iceberg at this beautiful, impressively-stocked apothecary.

A multimedia experience that chronicles the atrocities of racism.

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

The biggest pinball arcade in the world has over 600 pinball machines, and 300 arcade machines.

A dark, dank room in subterranean Manhattan was the site of a ghastly murder.

A small storefront museum explores the history and myth of West Virginia's famous urban legend.

Fantastic collection celebrating the final send-off.

12,000 sq. ft. museum tracing erotic art from antiquity to modern times.

An unoccupied lighthouse encased in layers of ice from the waters of Lake Erie.

The flower-shaped temple in Virginia aims to transcend the boundaries of the world’s religions.