Visitors to this arboretum are greeted by three smiling giants crafted from sustainable materials.

The hotel where Martin Luther King Jr. was shot is now a museum dedicated to his work.

Every equinox this Maya pyramid puts on a spooky ancient light show.

Clap your hands at the base of the pyramid, and the song of a sacred Mayan bird will echo through the air.

No telescopes, no power, no gift shop: The Observatory of Chichen Itza, one of the world's oldest observatories, takes astronomy back to basics.

The only diamond mine in the world where you can keep what you find.

The remains of the first public diamond mine in Arkansas.

Every day a troupe of pampered water fowl walk the red carpet to their favorite fountain.

Recently celebrating its 25th anniversary, the garden opened in September 1997 to celebrate the men and women who have had the greatest impact on Key West.

Florida's oldest bar was once a morgue, complete with a hanging tree and gravestones.

The birthplace of American international flight service has been turned into a celebrity's microbrewery.

These large-scale reproductions of Mario Sanchez’s colorful pictures and murals feel like a walk around a small movie set, and also lead you down an imaginary “street” of past decades.

A historic presidential getaway on the continental United States' southernmost island.

The highway's southernmost spot is a beloved local attraction.

Leave it to Key West to drop a real-live drag queen instead of a ball to mark the arrival of the New Year.

An idyllic swimming pool tells the tale of Hemingway's trouble with women.

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

A forgotten relic from New York's bygone trolley system hides in plain sight under a bridge.

The greatest real estate coup of all time.

Site of the first pathological and bacteriological research facility in the United States.

The feral felines of Roosevelt Island have a small army of allies and an abandoned hospital all to themselves.

A crumbling hospital from the 1850s on Roosevelt Island.

One of only two commuter aerial tramways in the United States.

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