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

This sandstone gorge in New York State's Adirondack Mountains is home to waterfalls, flumes, and more.

A monument celebrating the idea of reaching inaccessible places.

The largest retailer of seashells in the world.

Step back into the glory days of Florida's nascent tourism industry at this Gilded Age palace.

Step back in time on this preserved 1800s farm.

This road in the Great Smoky Mountains was supposed to assuage a displaced community, but ended up a $52 million dead end.

An abandoned factory along the Mississippi coated by a giant mural.

The Old Courthouse takes visitors on a captivating trip through St. Louis' timeline.

Every day a troupe of pampered water fowl walk the red carpet to their favorite fountain.

A beautiful South Korean gate and garden in Little Rock honors American Taekwondo.

An old saloon in the West filled with history, and according to some, a few dozen ghosts.

A wild west cemetery in Tombstone, Arizona, provides a window into the Old West.

After a short-lived attempt to bring America in line with the rest of the world, this road was left in metric.

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

Some of the tallest ancient American ruins continue to inspire awe and curiosity.

This collection of Wild West movie memorabilia also claims to hold some secrets of the Lost Dutchman's mine.

The unusual burial monument of Arizona's first governor.

Don't blink or you'll miss it.

Four hundred granite steps were built into this massive rock by the National Park Service.

This stretch of beach along California's central coast is a busy highway for the largest seal in the northern hemisphere.

One of the most scenic stretches of road in America winds between some of the country's oldest trees.

This little barrel-shaped cottage by Lake Superior was once a cartoonist's summer retreat.

Two dozen rescued bears roam (mostly) free at the largest bear ranch in the U.S.