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

Yo, Adrian!

This elaborate towering structure was once famed for its revolutionary height.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

Touching mementoes from those who didn't make it back from World War I still hang in one of New York's oldest bars.

A Natural History and Science Emporium.

This castle-like building in Manhattan helped destigmatize cancer in the 19th century.

This whimsical group of statues is a favorite of children who love to climb all over Lewis Carroll's beloved characters.

Curious crustaceans support an obelisk from ancient Egypt that now stands in modern-day Central Park.

The oldest living tree in Manhattan comes shrouded in sinister legend.

The site of the deadly Triangle Shirtwaist Factory Fire.

The most confusing clock in New York.

Reclaimed by nature, the ruins of Doodletown, New York are remnants of a town consumed by a state park.

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

Hiroshima survivor on Riverside Drive.

A curious fountain that has no water and includes Satan, a crab, and 9 giraffes.

The "Seinfeld" diner.

A terrific purveyor of natural history objects and curios.

The final resting place of many of New Jersey's most famous residents, including U.S. history's most in-vogue antagonist, Aaron Burr.

Infamous marsh filled with toxic waste, World War II-era London rubble, and dead mobsters galore.

This massive boulder is either a unique rock formation created by glacial melt or a magic energy vortex.

This tiny New Jersey village has lived many lives but seems determined to remain a ghost town.

A world-class collection of mechanical musical instruments and automata.