A crumbling hospital from the 1850s on Roosevelt Island.

Tucked in the back of this amazing antique store is an important piece of medical history.

An old department store turned Nazi prison turned artist commune.

This rocky spread has been squeezed up directly from the bowels of the earth.

Nature and beauty amidst pollution and industrial wreckage.

“Wagon Jobber" turned smokehouse magnate's family-owned business is still going strong 100 years later.

Queen Anne style apartment house built in 1886.

Constructed in the 1920s, this former pencil factory is now an office building.

If you were standing here on October 5th, 1950, you'd be dead.

Historic Greenpoint theater turned roller disco, then chain pharmacy, and now Sweetgreen.

The world's brightest bioluminescent bay.

Ant sculptures march up the side of what used to be an iconic spot in punk rock lore.

Century-old shop, specializing in Occult products.

The first American department store, and home to the largest operating musical instrument in the world.

Golden and naked, the figure that was once the highest point in New York is all that remains of the second Madison Square Garden.

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

This mountaintop lake bubbles and steams in a perpetual boil, thanks to its direct link to the Earth's interior.

France's national museum of scientific and industrial instruments.

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

100 massive sculptures in the Hudson River Valley.

One man's swirling six-acre monument of stone.

A stunning, two-tiered waterfall made famous by poets, artists and the legend of a ghost dog.

An abandoned 19th century quarry in the middle of the woods, remade by unnamed wanderers into a massive series of rock thrones.

Built as a home for the Union Porcelain magnate in 1867, now the Greenpoint Reformed Church and home to a ceramic mystery.