Downtown Minneapolis mixed art and function by turning some of their sewer covers into works of art.

The only arched bridge made of stone on the entire Mississippi River.

When flour explodes, it's not a pretty sight.

A toweringly silly piece of modern art has been delighting locals since the 1980s.

This massive roadside mascot was the first version of the giant to illustrate his butt.

Equal parts record-breaking temple to consumerism and bizarre fun park, it's more than you think it is...

New fungal and bacterial species call this deadly lake home.

The highest point in South Dakota contains the ashes of Valentine McGillycuudy, the "Holy White Man."

The granddaddy of all tourist traps, built on ice water, jackalopes, and a giant dinosaur.

Rumor has it the hot dog stand was targeted by two Russian nuclear missiles.

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

Soldiers were buried next to Lee's house in the center of Arlington Cemetery to dissuade the general from reclaiming his property after the war.

At 207 feet, one of the world's longest continuous escalators.

A winding district gerrymandered into the shape of a mantis.

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

The stone marker that Mason and Dixon placed at the eastern end of the famous north-south border they surveyed.

The longest escalator in the Western Hemisphere takes over three minutes to ride down.

In an odd geographic anomaly this city borders two different states on opposite sides of town.

The last holdout of a pre-Civil War rebel who took the matter of slavery into his own hands.

The world's largest fully steerable radio telescope.

The highest point in Maryland is only accessible by hiking through another state.

Near-constant high winds deform the trees on Spruce Knob, the highest point in West Virginia.

Take a steam-powered ride straight out of the past on this Appalachian rail line.

One day a year it is legal to jump off of this astoundingly tall bridge that spans an Appalachian gorge.