The stickered marker pinpoints where the only maintained road in the United States crosses into the polar region.

This abandoned mine offers a glimpse at what life was like for those who came to Alaska seeking Gold Rush riches.

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

A trading post in the North Pole where children send letters.

Watch bison, elk, and other wild animals up close at this national park.

A rare chance to get up close and personal with a 13-mile ribbon of ice near downtown Juneau.

This historic collection of Native Alaskan artifacts was resurrected through a partnership between the WPA and tribal artisans.

Roadside collection of 65,000 signs.

The easternmost town in Alaska can only be accessed from Canada.

Housed in a memorial lighthouse, this museum relays the history of surfing, beginning with the antics of royal Hawaiian teenagers.

Ten 25-foot-tall, beehive-shaped kilns, abandoned in Death Valley.

A glimpse into the lives of the the Miwok and Paiute people in Yosemite National Park.

Semi-recognized center of the world, with many oddities.

The first permanent memorial to a unique secret weapon of World War II.

This huge dam across the Colorado River caused an armed standoff between two U.S. states.

More than 25 fully functional scale replicas of famous lighthouses dot the shores of Lake Havasu.

This immigrant bridge once spanned the Thames but is now a fixture of an Arizona city.

An experimental, automotive replica of Stonehenge.

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

The first declared National Monument in the United States.

America's largest man-made forest was planted in an effort to bring back the past.

Every president in history is immortalized in bronze in downtown Rapid City.

The highest point in South Dakota contains the ashes of Valentine McGillycuudy, the "Holy White Man."

This prehistoric sinkhole lured exclusively male mammoths to their death, much to the delight of science.