The 72-foot giant escaped confinement in a large patch of mulch only to be reburied in the sandy shores of the Potomac River.

The only female equestrian statue in Washington, D.C. is a 15th-century French heroine.

This statue honors the author's groundbreaking family story.

Remnant of a largely forgotten struggle over resource scarcity.

This bug-eyed water wheel uses the power of the Sun to clean up Baltimore Harbor.

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.

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

Architecture lovers won’t stop touching the National Gallery's 19.5 degree marble prow.

A museum cafe showcases Native American dishes and indigenous ingredients from across the Western Hemisphere.

The National Park Service’s best-kept secret with views that rival any in D.C.

Look closely and you’ll notice that the color changes a third of the way up the tower.

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

An organ located deep within a cave, whose "pipes" are the geological features of the cave itself.

The national park was once a plantation estate.

The romance of early commercial flight still fills this Art Deco destination.

This isn't your average roadway—it's actually a National Park and a transportation pioneer.

The narrowest house in America is seven feet of pure spite.

A former major munitions plant that has been converted into a sprawling art space.

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

America's first federal monument.

This lovely picnic spot featuring thunderous jet landings is an aircraft spotter’s dream.

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

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.