A walk-in working camera obscura produces 360-degree live images of the San Francisco coast.

A winding path built in secret on the edge of the continent.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.

Holding multiple historical boats and an entire 19th century village, this New England attraction is the largest maritime museum in the world.

This small-town pizzeria won the Hollywood lottery.

The headquarters of the famous Yale society.

Collapsing castle on the Hudson river was once the storage site of military surplus business.

Protecting the future of some of the rarest and most misunderstood mammals of North America.

One-time largest man-made structure in the world will be a park in 30 years.

This outdoor gallery of graffiti-covered walls pays homage to the past, present, and possible future of street art.

One of the most enjoyable bits of history at Coney Island and “the most romantic ride in the world.”

An oasis of calm amid the chaos of the boardwalk, the museum traces the heritage of this beloved beachside amusement park.

This abandoned seaside fortress is now simply an imposing ruin being taken back by nature.

A former seaside jewel built for the everyman is now simply a neglected art deco fortress.

The home of aviation trailblazers, in a remote corner of the big city.

The oldest continuously operating farm in New York State.

Mysterious 500-year-old tapestries depict a unicorn hunt.

The Vatican of the movie industry turned into an actual church.

Con Edison’s exotic and heat-loving pests.

A way to take your secrets to someone else's grave.

A Victorian cemetery in the heart of Brooklyn remains a popular mecca of morbid curiosity.

A mass grave for victims of one of the city’s worst fires.

A curious friendship between two inanimate ladies.