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

Quite possibly the last cross all humans will ever see.

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

The seat of Buffalo government is a gorgeous Art Deco palace.

A book collector's dream, this Toronto bookstore has the world's first "Biblio-Mat," a random book vending machine.

One of many reminders of Tesla's scientific contributions overlooks the falls which inspired him.

A man used his Civil War-era fortune to build this sanctuary in memory of his wife.

This ruined fort hidden at the top of Central Park can't seem to keep from losing its historical plaques.

A vibrant, 100-foot-tall mural dedicated to Evelyn Nesbit, the tragic icon of the Gilded Age.

A Manhattan courthouse hides a small but scathing memorial to Holocaust injustice.

A three-story copper skybridge connects two Manhattan buildings with Art Deco luxury.

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

The "Seinfeld" diner.

The oldest family-run luncheonette in New York, last renovated in 1948, still serves food and drinks the old-fashioned way.

Though its celestial ceiling is impressive, the true star is the vast collection of French books.

Site of the graveyard vine believed to be a curse on a family from the 1800s.

A quiet memorial marks the spot where the victims of the Salem Witch Trials were executed.

Located just behind a quiet residential neighborhood, this is ground zero for the Salem witchcraft hysteria of 1692.

The 340-year-old house that inspired the classic Nathaniel Hawthorne novel.

Statue in Salem of the woman who starred as the witch Samantha in the sitcom "Bewitched."

Catch two 18-foot-tall ranchers mid-brawl as you drive by on Highway 285.

Church in Manhattan holds the bloody sock of Padre Pio, among with many other unusual relics.

There are owls with glowing eyes in Herald Square.

The last living thing to come out of the rubble after 9/11 is now a symbol of hope and resilience.