A hot dog stand where the heads are just as hot as the dogs.

Designed by Alfred Caldwel, this landscape showcases his vision of a native garden.

Rifle through images of skyscrapers, Worlds Fairs, and more in the largest public postcard repository in America.

An overlooked memorial honoring the local Washington residents who died in World War I.

The first memorial dedicated solely to the Black troops who fought for the Union.

A rotating cast of guys and dolls in front of a Washington, D.C. building.

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

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

The unique traffic pattern named for an influential urban planner is also known as the Pedestrian Scramble.

This seemingly out-of-place gas station by the Watergate hotel was once described as the most expensive gas station in the world.

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

Legend has it that President Grant’s frequent drinking in the lobby gave rise to the term “lobbyist.”

The first purpose-built art gallery in the United States is once again open as a center of craft arts.

A small triangle of DC grass is the final resting place of one of Sonny and Cher's songs.

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

A formerly glacier-tipped volcano that inspired none other than Jules Verne.

This black church sits alone among a field of lava rock.

Medicinal spa created with the discharge from a geothermal energy plant.

Iceland's largest lagoon is home to stunning multi-colored icebergs.

Three columns of volcanic rock shoot out of the ocean.

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

This stunning concert hall has become a symbol of Iceland's national recovery.

An encyclopedic collection of mammal penises.

This fantastical waterfall is hidden in a cave located in a cracked cliff.