An Industrial Revolution-era public work that purified water using nothing but sand.

The nearly 120-year-old piece of pork wears a brass collar and was once a man's "pet ham."

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

Lines from a walking song are etched into a rock in Natural Bridge State Park.

Nine of the very few concrete ships ever made in the U.S. are beautifully decaying off a Virginia pier.

A 300-yard long natural tunnel runs through a ridge deep in the Appalachian Mountains.

Giant busts of 42 U.S. presidents are sitting in a field in Virginia.

The final resting place of an outlaw, whose legend grew after death.

The final resting place of infamous outlaw Clyde and Marvin Barrow.

The peaceful space is adorned by paintings by the famed abstract artist Mark Rothko.

A decaying concrete oil tanker served as a disposal location for bootleg hootch.

One of the largest collections of wildlife art in the United States, built into the side of a cliff in rural Wyoming.

This rustic old building is said to be the most photographed barn in America.

This Yellowstone geyser may not shoot as high as the nearby Old Faithful, but it erupts for considerably longer.

One of the smallest towns in the United States.

The only natural lake in the world that drains into both the Atlantic and Pacific Oceans.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

A beautiful geyser under environmental threat.

The first declared National Monument in the United States.

An incredible airplane graveyard sits outside this small museum dedicated to preserving aviation history.

America's only nuclear missile silo open to the public.

Dramatic river bend surrounds a natural red-rocked pedestal.

This shrine to bovine consumption and all things fast food is a slice of culinary history both rare and well done.