The highest rapid transit station in the world.

A mass grave for victims of one of the city’s worst fires.

A heartbreaking monument showing the last morning in the life of Jane Griffith.

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

Sniff the Titan Arum's rotting flesh.

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

The remains of what was once the world's steepest passenger funicular.

Elevated freight railway turned wildly successful urban park.

Amid the bustle and noise of the Financial District hides a secluded garden oasis above the city streets.

A Gothic-style abode built to accommodate the church's three resident peacocks.

The "Seinfeld" diner.

Manhattan’s Battery Park has a whimsical carousel full of spinning, glowing fish.

Fourteen curious and controversial white bunnies sit in a circle near Newport Beach City Hall.

This abandoned cemetery is crumbling into ruin, exposing the artifacts and bodies buried there.

Collapsing castle on the Hudson river was once the storage site of military surplus business.

Once a ferry dock, radio transmitter, and now a new Greenpoint park.

New York's southernmost subway station is whimsically wavy.

Spike Lee's provocative film is officially honored right where it was made, the first time a work of art was used as a secondary street name.

A Victorian cemetery in the heart of Brooklyn remains a popular mecca of morbid curiosity.

You can still ride this 100-year-old work of art in Brooklyn's largest public park.

The ballpark in "Pigtown" where the Brooklyn Dodgers made their name was replaced with a huge apartment complex.

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

Here lies Lilly E. Gray, an alleged "victim of the beast," but the reason long remained a mystery.

This subtle Berkeley paving stone actually marks off a lawless tube of air that extends into space.