Provincetown's night owls flock to this 52-year-old pizza joint.

P-town goes wild for the malassadas at this 87-year-old institution.

A mosaic map made of over 100,000 tiles depicts the geological features and sea creatures that live along this San Diego beachside community.

A luxury hotel constructed out of a former jail.

Germany's Glienicke Bridge has a shady history of clandestine meetings, espionage, and spycraft.

To make itself stand out in a city renowned for its numerous museums, this photographic archive resorts to immersively-themed exhibitions.

A street in front of NASA's D.C. headquarters has been named in honor of the Black women who were essential to early spaceflight.

This bridge over D.C.'s Rock Creek Park is sometimes called the "Buffalo Bridge" because of its four buffalo sculptures, which were cast from a single piece of bronze.

On the Fourth of July this area will transform into a Pompeii-like storm of falling embers and ash.

The 5.5-mile ring of steel posts around the Capitol Building is one of the largest (and most uniform) of its kind in the world.

Once a sewer culvert, this road tunnel now offers cyclists and pedestrians a subterranean stroll under the C&O Canal.

A derelict bit of infrastructure from the canal that once ran through D.C. is landlocked in the heart of the city.

Before Nixon, "watergate" meant canals.

Washington's iconic carousel has a nice piece of Civil Rights history.

The world's oldest soul food restaurant is also one of its best.

The privately owned cemetery that holds room for Washington's finest when they step down from life.

The most accurate timepiece in the world.

D.C.'s first central library was born out of a chance encounter with the philanthropist whose name it bears.

The national park was once a plantation estate.

There’s a hidden military meme engraved on the World War II Memorial.

Fittingly, America's museum of architecture is itself a magnificently designed old building.

Long-abandoned trolley tunnels just a mile away from the White House are turning into an art space.

The United States Capitol's former columns still stand.

It's a repurposed treasure trove of history, located just an hour away from Acadia National Park.