The most confusing clock in New York.

Curious crustaceans support an obelisk from ancient Egypt that now stands in modern-day Central Park.

Cryptic messages embedded in the New York City sidewalk.

This whimsical group of statues is a favorite of children who love to climb all over Lewis Carroll's beloved characters.

Mysterious 500-year-old tapestries depict a unicorn hunt.

A pedestrian island in the middle of world-famous Times Square emits a strange (and purposeful) humming noise.

New York City's smallest piece of private property.

A remnant from the golden age of aviation still in use today, Pan Am's Clipper service took off from this Art Deco gem.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

The deadly but beautiful ornamental oleander was planted all over the island of Galveston after the hurricane of 1900.

When zealous marijuana enthusiasts kept stealing the "Mile 420" highway marker, the State of Colorado got creative.

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

Paranormal experiences in this hotel's room 217 led Stephen King to write "The Shining."

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

The ruins of a 19th century shelter run by the Independent Order of Odd Fellows.

This otherworldly church spire reaches up toward the heavens.

A mysterious light of unknown origin on the backroads of Missouri.

A modernist landscape of water and sci-fi concrete.

The Bucyrus-Erie model 1850B electric shovel, or "Big Brutus," the largest existing electric shovel in the world.

The first car-centric shopping plaza in the U.S. brought a little bit of Spain to downtown Kansas City.

Four, 18-foot-tall badminton shuttlecocks lie scattered about the lawn of a Kansas City museum.

A collection of huge, site-specific sculptures sitting in the Montana woods.

Modeled after a famous church in Vienna, Austria—but in Helena, Montana.

The last physical evidence of the Lewis and Clark trail is one of their autographs etched into this giant rock.