The private clubhouse for the members of the Academy of Magical Arts.

Remants of foundations, streets, and streetcar tracks inhabit the cliffs where a landslide occurred in 1929.

The abandoned zoo enclosures offer a perfect place to experience the other side of the bars.

High on a hill overlooking Los Angeles lives a world famous, high power conical Tesla Coil.

During prohibition, corrupt city officials ran drinking dens under the streets of Downtown Los Angeles.

An abandoned Victorian-era amusement park is rusting away amidst luxury houses.

This whimsical Oz-themed park had a wonderful impact on the surrounding neighborhood.

This shop for all your super spy needs hides an educational secret.

A giant bronze coil of feces is both a tribute to doggie defecation and a reminder to pick it up.

A goddess-topped water fountain in Chicago was created thanks to the dreams of a thirsty newsboy.

This massive stained-glass masterpiece is thought to be the largest Tiffany dome in existence.

A little-known subterranean street runs under some of the best-known buildings in Chicago's River North.

A century-old network of freight tunnels underneath the city's historic business district.

A Museum of Holography frozen in 1974.

This historic-shipwreck-cum-diving-spot can still be seen poking its boiler out of the Lake Michigan waters that claimed it.

World's second largest particle accelerator, where nature reveals its secrets.

Tour the luxe "glass cage" that inspired and unnerved the architecture world upon its debut.

If astronomy had a ghost, it would look like this observatory.

A hidden network of subterranean passageways lies tangled beneath Indianapolis' bustling City Market.

A 30-year-old Sycamore tree grown from a seed taken to the moon and back.