The final resting place of an unidentified revolutionary soldier sits behind a Virginia church.

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

The world's oldest continuously operating airport was founded by the Wright Brothers.

The grand marble structure next to the White House is Andrew Carnegie's temple to Pan-American diplomacy.

A 24-hour vending machine restocked daily with homemade full-sized pecan pies.

The world's largest squirrel statue clutches a pecan bigger than your head.

Of course the grave of JFK's assassin is surrounded by conspiracy theories.

An extensive, if one-sided, history of U.S. law enforcement's war on drugs.

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

A bronze statue on a downtown corner honors Minneapolis's favorite career gal.

This spot memorializes one of the greatest plays in NFL history, unless you happen to be a Raiders fan.

A double agent hid information for the Soviet Union beneath this bridge for more than 20 years.

A blank headstone topped with a pile of pennies marks the final resting place of the infamous assassin.

The famous abolitionist’s preserved estate is one of Washington's finest monuments to its great Black citizens.

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

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

The final resting place of many of New Jersey's most famous residents, including U.S. history's most in-vogue antagonist, Aaron Burr.

The mysterious wonder of an underground waterfall is illuminated by multicolored lights.

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

The actual model from the original "Star Trek" series is now on display at the National Air and Space Museum.

Mausoleums, astronomy, and animatronic dinosaurs at this memorial to an assassinated American president.

The nation's second-ever First Lady urged the founding fathers to "remember the ladies."

Rumor has it the uncarved lump behind the three famous suffragists is reserved for the first woman president.

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