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

The Lincoln Memorial has inspired many, even though a word on the inscription appears to be spelled incorrectly.

A portal into the bricked up canal that runs through the heart of Washington D.C.

This seemingly out-of-place gas station by the Watergate hotel was once described as the most expensive gas station in the world.

The little-known, 300-year history of the area includes former lives as a bustling tobacco port, parking lot, and industrial dump.

The "Key of Keys" for Washington, D.C. and the apocryphal landing place for the military campaign that started George Washington's career is now at the bottom of a well.

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

Engraved in stone here are the signatures of everyone who signed the Declaration of Independence.

The only tennis court that falls under the jurisdiction of the central bank.

The hippo that stands on this university campus was once a drunken flea market purchase.

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

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

The largest sand dune in Florida sits inside the state's first Black-owned beach.

Used as a military post in three different engagements, this fort has remained incomplete and unfired upon for nearly 200 years.

Named from the Spanish for “beautiful woods,” this public cemetery is spread across 29 acres of moss-draped oaks.

Amelia Island’s oldest independent bookstore is a cozy oasis for literary exploration.

Based in a former haberdashery, Florida’s oldest continually-operating bar has a rich nautical history and lots of local lore.

The sculptor was instructed to add “stallion attributes” to the general's bronze mare.

A small triangle of DC grass is the final resting place of one of Sonny and Cher's songs.

Georgia’s last drive-in movie theater is a relic of a bygone era.

The fairy tale castle of the “fairy-tale king,” this was also the inspiration for Disney’s “Sleeping Beauty.”

A remote boulder commemoration to General Andrew Jackson and his command during their march toward Florida for the First Seminole War.

Built in 1968, this arthouse has kept its movie-palace decor and has its own museum.

One of corporate America's best-kept secrets is also one of the most publicly displayed.