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

Home to items never before seen by the public.

The only recreation of William Shakespeare's indoor playhouse.

This unique museum cafeteria showcases the history and regional diversity of African American cuisine.

The house where John Wilkes Booth conspired with his co-conspirators.

This unassuming passageway played a key role in one of the most important events in U.S. history.

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

Franciscan monks created a facsimile of the Holy Land for North Americans who couldn’t afford the trip overseas.

You could be standing at the site of one of D.C.'s most fatal tragedies and not even know it.

A 200-year-old bar with a cheeky name claims to have served Edgar Allan Poe his final drink.

The site where Poe "in great distress, and ... in need of immediate assistance" likely died.

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

Meet some of the most prominent figures in Black history through life-sized wax models.

This simple convenience store sits on the location where the Ouija board was named—and has a plaque to prove it.

The trials and tribulations of marking Poe's grave.

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

The man who first patented the Ouija board rests in peace beneath a headstone that playfully reflects that achievement.

Eighteen miniature death-scene dioramas.

A model home in the Medical Examiner's Office in which grisly death scenes are staged to train forensic investigators.

Once home to seven different roller coasters, Glen Echo has undergone many transformations since its founding in 1891.

The tallest The Church of Jesus Christ of Latter-day Saints temple in the world soars above the Beltway.

It would take 35 firetrucks to fill this enormous glacial pothole.

FDR's Art Deco hospital tower was hopelessly inefficient.

This massive swimming pool is the high tech home to the human-powered submarine races.