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

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

An old-timey peepshow allows visitors to gawk at some of the world's most freakishly large footwear.

The final resting place of the living embodiment of the famous Forest Service symbol.

Three and a half miles of cliffs, rocky beaches, Gilded Age mansions and 40 Steps to nowhere in particular.

The final resting place of American icon Buffalo Bill, and a museum that aids in telling his tale.

Faceless white figures loom over the city from the rooftop.

The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

Lucha Libre (Mexican Wrestling) themed taco shop.

Memorializing an American tragedy of massive proportions.

Steepest flood safety railway in the entire world.

Sail through this subterranean show cave that is home to a legend that would go on to name nearly everything around it.

These unusual rooms on wheels are holdovers from the 1960s.

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

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

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

This colonial tavern played host to George Washington, Thomas Jefferson, and other famous early Americans.

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.

This stately building in Alexandria, Virginia was built by Freemasons to honor one of their most famous members.

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

The only surviving piece of a submarine said to be the most decorated vessel in U.S. history.

This working class sculpture pounds his hammer all the livelong day.