A beach made of semi-precious green sand on the Big Island of Hawaiʻi.

The only arched bridge made of stone on the entire Mississippi River.

A bronze statue on a downtown corner honors Minneapolis's favorite career gal.

One part antique store, one part curiosities hodge-podge.

One of the Seven Wonders of the Modern World holds the world's tallest metal staircase.

A 98-room castle in the middle of Toronto that bankrupted a 19th century electricity multimillionaire.

By day this New Orleans square is for pedestrians, but by night it is a kingdom of kittens.

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

Former villa and estate of James Deering developed to preserve native tropical forests.

This chapel on a cliff is renowned for its healing powers and was founded on the site of a supposed divine intervention.

The world's brightest bioluminescent bay.

This bridge was the birthplace of a unit of measurement based on a fraternity joke.

Home to the largest urban bat colony in North America, estimated at 1.5 million bats.

The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.

The former home of the Nobel Prize-winning American writer is now home to dozens of six-toed cats.

A monument celebrating the idea of reaching inaccessible places.

This spiny beast guards an artist's village while vying for the title of largest lobster in the world.

A restored Pittsburgh house of God has been converted to a marvelous house of suds.

The only way to see Pittsburgh is from the top of this lookout point, just like the ancient members of the native peoples did.

The only royal palace on U.S. soil has been a territorial capitol, a military headquarters, and a prison for a queen.

Watch the newest land on the planet form before your eyes.

This black shoreline is made up of exploded lava particles.

These picturesque Hawaiian falls are home to a rare species of fish that uses a special sucker to climb up cliffs.

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