The site of Paul Revere's historic two lantern warning.

An ancient cemetery with some historic bodies underfoot.

This blue behemoth of a bear is a colorful homage to Brown University's mascot.

A winged-helmed, sword-brandishing tribute to German Americans.

Equal parts record-breaking temple to consumerism and bizarre fun park, it's more than you think it is...

This bright yellow building is packed with sweet treats from all around the world, from chocolate-covered crickets to whoopie pies.

The grounds of former plantations where abolitionist Harriet Tubman spent her youth enslaved are now a museum to her incredible life.

This fort down the Potomac from Washington, D.C. was once the only defensive fort protecting the capital.

One of the three perfect vellum copies of this historic book known to exist is on display in a specially-designed case.

The 5.5-mile ring of steel posts around the Capitol Building is one of the largest (and most uniform) of its kind in the world.

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

"Congress may voluntarily remain in session throughout the summer, in order that our Congressmen may be protected from the intolerable discomforts and dangers of the ordinary outdoor weather!”

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

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

A little marble compass above George Washington's (empty) tomb in the Capitol marks where D.C.'s four quadrants intersect.

Perhaps the most scandalous statue of America's first president.

Home to a vast and influential collection of Shakespeareana.

There’s a hidden military meme engraved on the World War II Memorial.

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

A monument to the King's final show, complete with a time capsule.

This Indianapolis landmark offers a secret panoramic view of the city. 

This grave marks the final resting place of pioneer John Chapman, better known as Johnny Appleseed.

The world's largest anatomically accurate brain sculpture.

Along this stretch of Indiana roadway resides a giant insect composed entirely of scrap metal.