This Wall Street bar was once a hub of revolutionary activity where Washington famously bid farewell to his troops.

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

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

The humble fort that saved Washington.

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

A way to take your secrets to someone else's grave.

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

Michael Jackson got Bad and Crocodile Dundee walked on heads in this iconic Brooklyn subway station.

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

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

Detailed facade of a brownstone in Boerum Hill.

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

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

This slender three-story building has also had several famous residents.

Those belting out show tunes in this West Village piano bar might not realize it marks the site where Thomas Paine died in 1809.

Each year, one talented artist puts on a show sculpting twelve butter-based busts of dairy princesses.

Since 1973, this block has been home to the most concentrated collection of murals in San Francisco.

This private residence was the template for one of the most beloved television homes of all time.

The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.

A tiny theater hidden in an alley plays a constant stream of short silent films for anyone willing to peer through the peephole.

A gorgeous mural outside a beloved D.C. restaurant pays homage to famous Black Americans.

This stately mansion, built in 1787 by America's first Secretary of the Navy, is rumored to be one of the most haunted buildings in Washington, DC.

Look closely and you’ll notice that the color changes a third of the way up the tower.

The little-known, 300-year history of the area includes former lives as a bustling tobacco port, parking lot, and industrial dump.