This was one of the first (and last) university-built and operated nuclear reactors.

An arcade packed with a rotating collection of unique independent video games.

The last slot car racing arcade in Brooklyn is keeping the dream of speedy little autos alive.

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

The crown jewel of the Queens Museum is a nearly 10,000-square-foot architectural model of the city originally built for the 1964 World's Fair.

Everyone from Mark Twain to Teddy Roosevelt has a pipe hanging from the walls of this historic chophouse.

The first and only carousel with a lineup entirely of insects.

A WWI fighter plane and turn-of-the-century penny candy shop are among the unexpected features of this Financial District building.

Prove you deserve to be fed by Kenny Shopsin.

One of the last few places in Manhattan that employed a pneumatic systemic keeps it on display.

The remnants of two World's Fairs are here, complete with a 12-story globe, a mini-Manhattan, and a UFO-shaped pavilion.

Nondescript elevator doors open to reveal a stunning, surreal world.

Read between the lines of the subway map to find the hidden abandoned Civil War fort.

One of the last Jazz Age "Wonder Theaters" in New York City.

One of New York's best collections of pinball is hidden in a secret bar in the back of this laundromat.

More gold than anywhere else, ever.

Hidden in Central Park's Ramble is a troublesome cave buried just beneath the surface.

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

New York City's smallest piece of private property.

A DIY art gallery/music venue/lecture hall dedicated to video game culture.

A miniature rainforest is growing inside of a Midtown Manhattan office building.

The oldest family-run luncheonette in New York, last renovated in 1948, still serves food and drinks the old-fashioned way.

New York's oldest magic store.

A beautiful and abandoned New York subway station from 1904, complete with chandelier.