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

The oldest continuously operating fish market in the United States.

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

Decades before the scandal, this staircase on the river was a literal "water gate."

The national park was once a plantation estate.

This rare triple-jurisdiction drawbridge passes through Virginia, Maryland, and Washington, D.C.

This isn't your average roadway—it's actually a National Park and a transportation pioneer.

This colonial tavern played host to George Washington, Thomas Jefferson, and other famous early Americans.

A lone historical marker off the highway and scattered debris are all that remain of this Cold War-era missile site.

One of the oldest train stations still standing in Virginia played a vital role during the Civil War.

The most historic church in Fairfax County played a role in the creation of the American Red Cross.

Burke’s oldest cemetery also houses the victim of the county's grisliest murder.

This plaza at the end of the world teems with monumental tributes to a problematic history, and laser discs.

The most southern point you can drive to in the Western Hemisphere.

The world's most remote airport.

The largest stone moai on Rapa Nui.

The southernmost Anglican cathedral in the world has whale bones standing in its yard.

An inspired museum dedicated to the patron saint of enslaved people, inside the cloisters where he lived and died.

The colonial city's social history is reflected in its fanciful door knockers.

This elegant Colombian fortress was one of the torture headquarters for the Spanish Inquisition.

A cozy bookstore and coffee shop in the heart of Cartagena's Old City.

Often mistaken for an office building, inside this venue is an amazing collection of Native Alaskan art.

The first Russian Orthodox church in North America and an Alaskan landmark.

The remains of the first saint from Alaska in the Russian Orthodox Church.