This imposing Masonic temple a mile from the White House was the first public library in Washington, D.C.

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

A hidden passageway now marks the site of an assassination attempt on Ronald Reagan that some say broke a 140-year-old curse.

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

After his presidency, George Washington planned to live only a few blocks from the Capitol building.

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

Before Nixon, "watergate" meant canals.

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

The abandoned bathhouse is all that remains of the hot springs considered Florida's original tourist attraction.

The graveyard holding the remains of George Washington's slaves was forgotten for nearly 200 years.

This rare triple-jurisdiction drawbridge passes through Virginia, Maryland, and Washington, D.C.

The oldest continuously operating fish market in the United States.

One of the dwarven trees dates back to 1625 and survived the Hiroshima bombing.

The United States Capitol's former columns still stand.

Enormous piles of historically significant stones, dumped by Congress in a forest, and abandoned for 60 years.

This "preacher's pulpit" once used for pagan ritual, is home to a new, and dangerous ritual.

One of the most breathtaking railways in Europe also takes one of the steepest climbs, from fjord to mountain plateau.

Home to three historic ships from the age of Vikings.

One man's exploration of the human form, including the bizarre and delightful "Man Attacked by Babies."

The highway's southernmost spot is a beloved local attraction.

A monument celebrating the idea of reaching inaccessible places.

The island residents are known for taking their quirky sense of humor with them to the grave.

"We Seceded Where Others Failed."

Island ghost town detailing Flagler's folly in building the Overseas Railroad.