Remnants of an old bank adorn this station's brick wall.

A museum dedicated to the history and exploration of both popular music and science fiction.

A wall of chewing gum moonlights as collective art.

This pun was simply waiting to come to life, and one defense contractor made it so.

At Washington's Dulles Airport is a satellite museum (no pun intended) with three quarters of a million square feet of aircraft history.

These unusual rooms on wheels are holdovers from the 1960s.

Where pardoned turkeys once spent their all-too-brief final days.

A beautiful Victorian-era cemetery, complete with a miniature village.

The United States Capitol's former columns still stand.

An enormous, inside-out glass globe built in 1935.

An organ located deep within a cave, whose "pipes" are the geological features of the cave itself.

Outsider art meets paleontology at this roadside reptile repository.

Exact replica of the ancient monument, but much, much lighter.

This mysterious structure by the Washington Monument is a flood barrier designed to protect the White House against rising waters.

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

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

The only National Monument ever to go missing for nearly 50 years then resurface in a dump.

You could be standing at the site of one of D.C.'s most fatal tragedies and not even know it.

The site of the climactic scene from the classic horror film is now a historic landmark.

A muscular Art Deco monument represents the struggle between regulators and unbridled markets.

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

This hobbit-y little hot spring may be the oldest spring used by humans in all of Iceland.

If a glacial river suddenly diving into a sheer chasm via a dramatic, multi-stage waterfall isn't peak Iceland, it's certainly close.

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