Where a brain, a beauty, a jock, a rebel, and a recluse met one Saturday and changed their lives forever.

Behind a modern brick exterior lies the oldest continuously-operating lunch-car diner in the United States.

The spaceship-like theater, which is still in use, was one of the most popular exhibits at the 1964 New York World's Fair.

"The Most Boring Road in the State."

This lone tree and dramatic sandstone outcropping are so beloved by Michiganders they can be found on one of the state’s coins.

Island where motor vehicles are banned -- home to the only carless highway in the United States.

This shallow cave got its name from copious amount of human bones found inside.

The fifth-longest suspension bridge the world, connecting one Michigan peninsula to another.

This national park on the shore of Lake Michigan features remarkable dunes that lie at the heart of a Chippewa legend.

This experiment in the lifespan of seeds will take a century before it is complete.

The plants form a living library and laboratory for researchers and students at Michigan State University.

The first presidential bomb shelter was located in an old vault under the Treasury, connected to the White House via tunnel.

A clone of a cloned tree that was so important it allegedly had its own guards.

This church built atop a gas station promises to "equip you for the next stage in your life’s journey."

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.

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.

The rogue roots are gradually consuming some of the historic marble grave markers.

The oldest building in the District of Columbia was preserved because of a mistaken connection to George Washington.

‘Bush the old fire dog died of poison July 5th, 1869. RIP.’

This stately mansion, built in 1787 by America's first Secretary of the Navy, is rumored to be one of the most haunted buildings in Washington, DC.

Before Metro, Washington had a robust streetcar network—and you see the remains of this infrastructure if you know where to look.

For 60 years, the academy had no permanent location until members voted Washington D.C. as its forever home.

The beloved statue at the National Academy of Sciences is oh so inviting to sit on.