A clock set into the concrete outside a Manhattan jeweler has been telling time underfoot for over a century.

This anonymous businessman sculpted in bronze became an enduring memorial after 9/11, and had been mistaken by rescue workers for a survivor in the rubble.

Unrepaired walls from a 1920 anarchist bomb attack.

Wall Street has a new heroine, a bronze statue of a small but fierce girl.

This curved Manhattan building was built to house the opulence of John D. Rockefeller's oil empire.

Twice a day one of these tragic bronze mariners drowns with the tide to remember all those the sea has taken.

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

The former hotel where Tesla invented the radio.

A dilapidated dock tells the story of Titanic's missed arrival.

This historic building housed the surviving crew members of the Titanic, who were left destitute after the wreck.

This simple Manhattan salt house is artfully shaped... well, like a giant granule of salt.

Blighted Irish field and the ruins of a 19th-century cottage on the edge of urban Manhattan.

Once considered a marvel of engineering, this 107-mile canal played an integral role in building New York City.

On the Hudson resides one of the largest clocks in the world.

Intertwined, interspecies trees which locals believe can grant boons to lovers.

Strange beasts lurking in a garden are all that remain of a quirky, short-lived theme park.

A trove of tiny treasures hidden within a Florida park.

This 15-foot former Johnny Appleseed has given up his apples for donuts and coffee.

This creative sculpture was a way to "recycle" an old tree.

The Tallahassee Airport serves over half a million passengers a year and is home to some permanent residents too.

Though it's unclear why it's there, the lifelike sculpture of the giant lizard is oddly charming.

One man's grief over the national tragedy has manifested in a pod of homemade whales on his front lawn.

This fairytale-inspired cottage was created by a university literature professor.

This home designed for chocolate magnate Antoni Amatller is an exquisite treasure-box of Catalan Modernism.