A massive volcanic plug is now a protected area that hosts a number of bird species.

A deserted hodgepodge of experimental structures designed by nearby university students.

A chain of bells connect the California Missions and honor the legend of the "King’s Highway."

An alley covered with 20 years of bubble gum.

A hotel and restaurant serving as the mecca of kitsch.

A trash dump made beautiful by nature's power.

A raised boardwalk winds through a thicket of stunted, century-old trees no more than nine feet tall.

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

The residents at this Yellowstone wildlife park will certify your cooler as "bear-proof."

Examine the impact of the horse on Great Plains culture through exhibits on ranching, rodeo, and the Native American way of life.

The ruins of Theodore Roosevelt's beloved ranch stand in a forgotten corner of a national park named after him.

The first declared National Monument in the United States.

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

This vintage train once gave new meaning to “swimming upstream.”

A cemetery housing wild west legends in South Dakota.

Hidden behind Lincoln's head is a chamber containing enamel plates documenting American history, sealed in a teakwood box in a titanium vault.

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

The final resting place of soldiers' loyal canine companions.

Overlooked by many, the two famous Scottish warriors guard the main gate of Edinburgh Castle.