Designed by Maya Lin, the memorial honors 41 individuals who died fighting for equal rights between 1954 and 1968.

A real flying saucer, contracted by the U.S. Air Force.

You can walk through the first Boeing Air Force One, which famously carried JFK's casket from Dallas back to D.C.

Inside houses a vast collection of military aircraft and missiles spanning the ages.

This stuffed pigeon of war had the very serious name "John Silver" until he lost a leg in battle.

The controversial urban planner who designed Washington, D.C., was buried in Maryland, and can presently be found in Virginia.

Recorded as the first person buried in Arlington Cemetery.

Though his role as the inventor of baseball may be up for debate, fans still festoon Doubleday's grave with baseballs.

Soldiers were buried next to Lee's house in the center of Arlington Cemetery to dissuade the general from reclaiming his property after the war.

A tribute to the "toughest woman on the Texas frontier," who survived a famous battle and five husbands.

The former home of one of America's greatest short story writers is home to an annual pun competition.

A focal point of in Denver’s skyline for over a century, inspired by a Venetian basilica.

While comics are the main attraction at this megastore, the second floor plays host to an exhibit fit for a museum.

Once a mortuary that held the remains of Buffalo Bill, this Denver hotspot is now a death-fixated restaurant.

Neal Cassady may still have an open tab at one of Denver’s oldest watering holes.

The spot in the Mile-High City that's exactly 5,280 feet above sea level (at least for now).

This was once the home of Gahan's Saloon, Denver's most storied speakeasy.

Overlooking the Colorado Convention Center is this giant sculpture made from thousands of triangles.

This sidewalk tribute honors Colorado's great culinary creation.

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

This deserted Gold Rush town is home to a Masonic lodge that, strangely enough, still holds meetings.

This underfoot portrait is the work of a disgruntled painter inspired by a tragic poem.

See 150 million-year-old dinosaur tracks and bones dating back to the Jurassic period.

In the middle of a busy airport, a statue honoring the astronaut who told Houston that Apollo 13 had a problem.