Dr Barnes' $25 billion private collection of art and arboretum.

This former theme park in New York's Adirondack Mountains fell into ruin before being resurrected as a state-run campground

Lake Champlain Bridge, the recently demolished and rebuilt bridge where they filmed "What Lies Beneath".

It wouldn't be long after purchasing this farm, Brown would lead his siege on Harper's Ferry.

A precariously balanced rock perches on the edge of a cliff created tens of thousands of years ago by glacial erosion.

The eccentric mansion of one the most popular horror authors of modern times.

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

Instead of solid circles, the stoplights in this northern Icelandic town have glowing red hearts.

The most powerful waterfall in all of Europe.

Known as one of the most climbed mountains in the world, this barren peak is permanently bald thanks to an anti-wolf fire.

This 150 foot seven-tiered cascading waterfall is one of the hidden gems of the White Mountains.

Supposedly Satanic numbers adorn this preserved submarine sail.

Now the site of a high school, this was almost the location of the largest cathedral in the US.

A massive sea stack famous for its appearance in The Goonies.

Only known mainland rookery of the threatened Stellar sea lion.

Built in 1870 at the bridge that connected Buda and Pest, this spectacular incline railway was almost lost forever during World War II.

"the sweltering inhabitants of Charleston and New Orleans, of Madras and Bombay and Calcutta, drink at my well . . . The pure Walden water is mingled with the sacred water of the Ganges."

The home, museum, and death site of Kodak's influential founder.

This hidden oasis features a stunning view of the Hudson River and the Palisades from a castle-like museum.

The famous author's cottage hideaway.

Come for the flowers, stay for the bats!

The place where Samuel "Slater the Traitor" brought the Industrial Revolution to America.

Visit the monolithic tomb of America's most famous general.

One of the only single-person private gravesites in New York City.