Small ship votives hang from the vaulted ceiling of this port-side church with a Latin inscription on the wall.

The biggest museum dedicated to insects in North America, one of the largest in the world.

This 1967 experiment in modular architecture was designed to be a new model for urban living.

Designed by Buckminster Fuller, this relic of the 67 Expo survived fire and ice.

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

A hip bar decorated with walls of golden skulls.

Become a prohibition rebel.

A Pythagorean funhouse that tries, successfully, to prove that math is the coolest thing ever.

Dodge prohibitionists and slide through the telephone booth in Crif Dogs.

A crumbling hospital from the 1850s on Roosevelt Island.

A tiny museum housed in a New York freight elevator specializes in the "overlooked, dismissed, or ignored."

Elevated freight railway turned wildly successful urban park.

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

Rat sculptures try to infiltrate the Graybar Building in an architectural tribute to New York City's nautical history.

A hands-on traveling collection of the innovative devices of yesteryear.

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

A dark patch of the ceiling at Grand Central Terminal which was not restored is still stained brown by tobacco.

A whimsical, but often overlooked clock in Park Avenue.

The former hotel where Tesla invented the radio.

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

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

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

Three-story slide through the New Museum.

A masterpiece of LGBT art has been restored in what may now be the most valuable restroom in America.