Hidden in plain sight on a pair of Manhattan subway tunnels are a pair of public instruments that sing to each other.

Once the tallest building in the world and the site of "the highest dinner ever held in New York" this building now holds the most expensive penthouse in the city.

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

The oldest operating apothecary in the US has treated everyone from Thomas Edison to Mark Twain.

Wall Street has a new heroine, a bronze statue of a small but fierce girl.

A celebration of capitalism in Midtown.

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

Under a glass sidewalk lie the remains of some of Manhattan's oldest buildings.

Read a book next to a Midtown waterfall.

A dilapidated dock tells the story of Titanic's missed arrival.

The one-stop shop for all of your superhero (or evil arch-nemesis) needs.

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

This lower Manhattan bar is set up in an old bank vault that rests beneath a skyscraper that hides even more historic splendor.

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

Try not to get slimed in Tribeca.

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

This beautiful building in the heart of Manhattan's Financial District was empty for decades.

La Monte Young and Marian Zazeela's "Dream House" will immerse you in an ever changing world of sound and light.

A serene plaza that commemorates one of the Granite State's most iconic figures.

Come for the gun-toting hillbilly madman, stay for the ice-cream loving basketball bears.

Once the future of underwater combat, this old sub is now open for visitors to muck around in.

An unusually designed bridge from the 1920s was built to withstand the tides and winds of Maine.

Turns out you can see the world without ever leaving Maine.

This 19th century granite fortification is one of the most well preserved forts in New England.