This beautiful building in the heart of Manhattan's Financial District was empty for decades.

A tree that grows parallel to the ground was declared Brooklyn's "crowning curio" by the poet who saved it.

A modern zoetrope on the New York City subway.

Leaf through over 30,000 artists' sketchbooks in what may be the world's largest collection of doodles

Two New York rooftops are home to the largest rooftop soil farms in the world.

A nude beach alongside a washed-out road.

An abandoned vacation home spent a decade taking on legends. It's now taking on water.

Island ghost town detailing Flagler's folly in building the Overseas Railroad.

St Bernard de Clairvaux Episcopal Church, better known as one of the oldest European buildings in the Western Hemisphere.

America's only city hall with minarets took architectural cues from Ali Baba and the Forty Thieves.

Former villa and estate of James Deering developed to preserve native tropical forests.

This beautiful Miami garden was designed as a laboratory for tropical plants.

The only swimming pool listed on the National Register of Historic Places is emptied and refilled each day with naturally filtered water.

A community of collapsing homes more than a mile out from the Florida coast.

35,000 grape hyacinths flow like water down a garden hill.

The macabre graffiti spectacle in a quarry in a Massachusetts forest reservation.

Rising 30 feet in the air atop Quarry Hill, the Old Powder House is the oldest stone building in the state of Massachusetts.

The often-overlooked ruins of one of the first buildings designed by famous landscape architect Frederick Olmsted.

Ralph Waldo Emerson spent two years living here decades before it became a Frederick Law Olmsted-designed park.

The thousands of shades on display — some toxic, others impossibly rare — are a library of more than just color.

The self-proclaimed world's smallest museum, located next to a Massachusetts sandwich chain.

This monument on Breed's Hill proves that one of the most famous battles of the Revolutionary War is misnamed.

Narrowest house in Boston.

This landmark cemetery in Boston was created more than 300 years ago.