Hidden in plain sight on a pair of Manhattan subway tunnels are a pair of public instruments that sing to each other.

This lovely hilltop tower was specifically built to withstand 100 MPH winds.

Who needs fancy modern water slides when this giant North Carolina rock works just as well?

The world's tallest doric column is this Ohio monument to a naval victory in the War of 1812.

This stunning Connecticut mansion is actually just a one-room-deep hoax.

One of the most scenic falls in Massachusetts has a history of death and grim legend.

The author of Uncle Tom's Cabin was neighbors with Mark Twain while living in this Connecticut home.

Hand-powered race of alternative forms of transportation.

The site of Billy the Kid’s most famous escape and the end to the Lincoln County War.

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

A clear blue swimming hole with hidden caves, still unexplored.

A small metropolis of Pueblo cave dwellings have been carved right into the hillside of this national monument.

This shop specializes in oddities and Victorian-inspired wonders.

This popular pilgrimage site offers a hole filled with holy healing dirt.

These aggressively sustainable art homes look like something out of 1970's science fiction.

A multi-storied adobe complex has been inhabited for more than a thousand years.

An artsy hidden staircase leads to breathtaking views of San Francisco.

The haunting ruins of Jack London's dream house.

Macabre headstones carved with winged skulls, dancing skeletons, and pithy reminders of impending death.

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

Three prestigious academic collections come together to create a world-class natural history museum.

Bouncing, delightful, mechanical art at the MIT Museum.