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

This small museum celebrates the history of the Ouija board and its connection to the city of Baltimore.

This Asian-inspired tower in a lush urban park provides spectacular panoramic views of Baltimore.

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.

This beloved Baltimore spot features caged dolls, a giant Pez collection, and many, many mannequins.

This free, take-a-book shop seems like a trick but isn't.

Crammed into a Baltimore row house is an oddities shop that sells everything from skulls to dead insects.

A terrace reminiscent of Rome's Spanish Steps is tucked away in a little park in Washington, D.C.

Public opinion is still divided on this enormous sculpture in front of Baltimore's Penn Station.

Board a mine car and descend the #190 slope 300 feet underground into the Clark Vein of coal.

A local prank turned town icon.

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

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.

Long before the Battle of Gettysburg occurred, dinosaurs roamed the area and left their footprints on this bridge.

While seemingly a cruel joke, this bench actually honors an esteemed member of the community who passed away in 2006.

This covered bridge was used by both Union and Confederate troops during the Battle of Gettysburg in 1863.

A monolith replica monument of Jean Ribault commemorating the landing of the French in the New World.

A sacred site for Native Americans surveyed by George Washington and owned by both King George III and Thomas Jefferson.

For nearly a year, General Ulysses S. Grant was based here during the American Civil War.

An innovative attempt to break a siege in the American Civil War still scars the earth today.

A former Confederate hospital serves as a remembrance of wounded and dead soldiers.

The final resting place of two (or three) presidents, one vampire, and 18,000 Confederate soldiers.

Rusty red sands line the shores of this Canadian Province.