Siberian husky that delivered a life-saving antitoxin.

Permanent exhibit reminds visitors of the Exxon Valdez.

A morbid gateway to an Alaska town prides itself on the hunting history it represents.

Buy your friend a drink or staple some cash to the wall for the next guy at the Salty Dawg Saloon.

Running under an entire mountain, the longest highway tunnel in North America is kept fresh using portal fans and jet fans.

North America's first frozen mummified remains of an ice age steppe bison, the 36,000 year-old mummy named "Blue Babe."

The king of U.S. high points towers over every other peak on the continent.

A 30-foot stack of piano keys memorializes one of the greatest keys players in jazz history.

At the center of this cemetery stands a 2,000-year-old burial mound of the Adena culture.

The world's tallest doric column is this Ohio monument to a naval victory in the War of 1812.

The largest earthwork effigy in the world.

Take a drunken tour inside the world's largest known geode.

This taxidermy horse was a Civil War hero.

The 28,000-year-old specimen is remarkably intact.

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.

A line of blue paint marks the route of the inaugural parade.

While most wind tunnels test scale models, the "Cave of Winds" was large enough for actual airplanes.

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

Daredevil repair workers can worm their way out the access hatch, loop ropes over the apex and rappel down the monument.

The monument's pointy aluminum tip has been melted down by repeated lightning strikes.

Washington's iconic carousel has a nice piece of Civil Rights history.

Those with a sharp eye can find the hidden image of a German Shepherd on the memorial's Mural Wall.

The "lovely red Vega" of the legendary record-settling pilot.

Perhaps the most scandalous statue of America's first president.