This dilapidated castle-like structure overlooks the Hudson River at one of its widest points and was once home to nuns.

A beautiful, historic location open to the public.

An abandoned horticulture institute gloomily presides over rows of derelict and vine-wrought greenhouses.

America's greatest forgotten garden and the former stomping grounds of Son of Sam.

This bronze sculpture was inspired by a photograph of Martin Luther King Jr. and his wife embracing after he won the Nobel Peace Prize.

The final resting place of the great escape artist, where some still gather to wait for his escape from death.

This former water source for the City of Brooklyn is now a thriving natural wetland.

Holding the most bodies of any cemetery in the United States.

This mysterious marker puzzles pedestrians and infuriates geographers.

In the back of a nondescript sports bar is a museum-worthy mural by legendary cartoonists.

Headquarters of the world's fourth largest Hasidic sect and the first of many "770s" around the world.

This neo-Gothic former auto showroom is one of the few remaining reminders of Brooklyn's "Automobile Row."

One of the deadliest American air disasters is nearly forgotten in Brooklyn.

You’ve heard of bookworms, but this small sculpture at a university library may be the world’s first bookbee.

Sip a cappuccino in the historic cafe that introduced them to the United States.

This striking arch, one of the first architectural elements constructed in Prospect Park, was recently restored to its original glory.

A monument stands to the famous suffragist who penned the declaration for women's equal rights, including the right to vote.

An activist who committed her life to peace and women's suffrage.

The end of the 4 Line is also the end of the line for 300,000 souls in one of NYC's most illustrious cemeteries.

Small monoliths of several varieties of stone sit alongside a wooded path in the Bronx.

This abandoned subway station can still be seen on regular commuter trips.

Home to a dizzying array of letterpress blocks with a rich history.

More gold than anywhere else, ever.

Supremely flaky treats await at Amadou Ly’s boulangerie and patisserie.