This seemingly unremarkable boulder is said to bear the hoofprint of the devil himself.

The longest continuous underwater road in North America was built at the insistence of Franklin Roosevelt.

The highest rapid transit station in the world.

A working metal shop and venue for outrageous art and music shows in a former cannonball factory.

The real "father of baseball" rests in Brooklyn.

Final resting place of the immigrant who brought artificial seltzer water to America.

The inventor of the Coney Island hot dog rests in a grand mausoleum in Brooklyn.

A hidden architectural treasure in New York's Brooklyn.

This interactive gallery makes you feel like you've stepped into a fantasy world filled with whimsical monsters.

The world's largest collection of materials relating to lesbian history is housed in a Brooklyn townhouse.

This recently uncovered ad for Lindsay's run at Mayor in 1965 had been hiding for decades underneath a billboard.

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

First a horse rendering plant, then a 19th century landfill, this beach is full of glass from thousands upon thousands of broken bottles.

This Queens hospital has stood abandoned for almost 20 years after its patients were secretly relocated in the dead of night.

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

Con Edison’s exotic and heat-loving pests.

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

The largest known open fault in the United States is basically a giant natural refrigerator.

The oldest continuously inhabited street in America.

The dairy farm in upstate New York where nearly half a million people gathered for three days of peace and music in 1969.

Retribution for death of infamous mob boss Franie Yale was a case of mistaken identity.

Where there’s manufacturing, there’s fire!

What’s a sure fire way to end up in jail in New York in the 1920s? Peddling bad moonshine.

Queen Anne style apartment house built in 1886.