Once thought to be the fabled Holy Grail, it is now known to be an oil lamp.

A staggering collection of photographs depicting medical, social, and historical change.

This combination shop and museum is filled with curious items and artifacts.

This elaborate tunnel is the first structure composed of cast concrete in the United States.

The façade of this building looks like a bingo board, but it's really a giant clock by a famed graphic designer.

Michael Jackson got Bad and Crocodile Dundee walked on heads in this iconic Brooklyn subway station.

The competition: breathe deeply as long as you can.

Outstanding taxidermy dioramas showcase the grandeur of the continent's wildlife with spooky realism.

Brooklyn vintners creating world-class wine in a city not known for its vineyards.

The Underground Railroad passed right through this historic Brooklyn Heights church.

A forgotten relic from New York's bygone trolley system hides in plain sight under a bridge.

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

This mysterious marker puzzles pedestrians and infuriates geographers.

Pulled from the rubble of one of the worst modern tragedies, a steel crossbeam became a symbol of hope for New Yorkers.

Captain America, Sub-Mariner, and the Human Torch were all born in this art deco Manhattan masterpiece.

The last remnants of what was once one of the world's grandest hotels can now be found in a Manhattan subway station.

The last living thing to come out of the rubble after 9/11 is now a symbol of hope and resilience.

Waterway populated with abandoned projects, including a submarine.

A one-ton statue of Steve Rogers beautifies the entry to a Brooklyn Bed, Bath & Beyond.

A sculptural commentary on capitalism pokes up from the East River.

One Brooklyn man's collection of life-size fiberglass statues has taken over his entire yard.

This exemplar of modernist architecture is meant to captivate and inspire students of the Cooper Union.

Imagine having a street run right through your home, or better yet, a historic bridge three stories high.

Little Red Lighthouse under the George Washington Bridge.