The oldest surviving botanic garden in the United States.

This palatial botanical garden is home to one of the largest pipe organs ever installed in a private residence, and a piece of Wood's cycad.

Enchanting gardens surround a derelict mansion, all hidden in plain sight behind a stone wall.

Garden dedicated to native carnivorous plants and site of huge flytrap heist.

This English-inspired Maryland garden is home to acres of opulent plant life including bushes shaped into an entire fox hunt.

A historic cemetery filled with quirky faux wood art and unique tombstones.

A Nessie-like monster supposedly lurks in this lake.

Discovered by a soldier during the Revolutionary War, these springs helped create an iconic South Carolina ginger ale.

The final resting place of the hundreds of bodies originally buried where Badin Lake sits now.

A wrecked ship dating back to the American Revolution was only recently discovered off the Delaware coast.

This sinkhole is disguised as a pond and named after the man who stumbled upon it.

Long buried under the 20th-century landscape, this lift lock of the Alexandria Canal is the lone remnant of an ambitious early American transportation project.

Home to the infamous "Typhoid Mary" and the worst loss of life in New York's history prior to September 11, 2001.

Outstanding taxidermy dioramas showcase the grandeur of the continent's wildlife with spooky realism.

Long the exclusive domain of birds and vagabonds, this little-known Central Park peninsula is open to the public once more.

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

This secluded ruin was once a home for exotic plants.

Granite outcropping that the state's tourism bureau doesn't promote because of its delicate ecosystem.

A billionaire heiress' menagerie of animals were lovingly laid to rest on the grounds of her former estate.

A unusual sanctuary for abused and exotic animals in South Jersey.

The first partially complete dinosaur skeleton was discovered here, forever changing the world's view of the ruling reptiles.

An almost life-sized elephant named Ms. Ellie greets visitors at this jumbo-themed museum.

Outsider art meets paleontology at this roadside reptile repository.

This research center for rare prosimians is studying how they sleep to help prolong human life.