A Seussian sculpture made of brass instruments.

A historical home in upstate New York honors the work of John W. Jones, a formerly enslaved man who was a major agent for the Underground Railroad.

The wooden octagon in which Huckleberry Finn and A Connecticut Yankee were born can still be visited in upstate New York.

Plot your trip through the city on the sidewalk.

Once America's longest-manned military fort, now an abandoned hulk.

Manhattan's lighthouse, erected at the insistence of the unsinkable Molly Brown.

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

A Manhattan courthouse hides a small but scathing memorial to Holocaust injustice.

An abandoned asylum where patients have been forgotten but their possessions remain.

The name of this famed hospital was once a byword for the horrors of medical and psychiatric care.

One of only two commuter aerial tramways in the United States.

Read a book next to a Midtown waterfall.

A very classy 1920s-era bar right in Grand Central Station.

One of the earliest bowling lanes in the U.S. doubled as a sewing school during a time when women had little job opportunity.

This old estate is a remnant of when the Bronx was a popular summer destination for wealthy New Yorkers.

Hordes of precariously balanced stone figures crowd the shores of the Hudson River.

Surrounded by low rise buildings and partially converted into an auto body shop, this marble archway is the only vestige of a forgotten Manhattan estate.

This futuristic airport terminal was abandoned for decades before reopening as a hotel—with a vintage plane of its own parked out back.

A retired subway car stands alone in a field in the middle of Queens.

A whimsical, but often overlooked clock in Park Avenue.

Cheap pizza and all of your naughty bedroom needs housed in a stunning example of Art Nouveau architecture.

An artist's cute bronze subway sculptures belie his violent artistic past.

Named the fifth most beautiful building in America in 1885, this former courthouse boasts the best view in the Village.

The artist and New York City icon lived, worked and died in this converted carriage house owned by another iconic artist, Andy Warhol.