These stairs were built to accommodate royals mounted on elephants.

Reputedly haunted sandstone necropolis with exquisite stone carvings.

A real-life "hobbit" cave in Flores, Indonesia.

A sprawling nature preserve harbors the world's only living dragons.

The evolution of recreational vehicles and motorhomes is on display in the “RV capital of the world."

A giant concrete egg marks this Indiana town as the "Egg Basket of the Midwest."

The first artificial white water river course in North America cuts right through an Indiana city.

This museum collects over a century of automobile history including the iconic car from The Muppet Movie.

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

An architect's childhood fantasy treehouse made real.

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

The magic's in the hole!

Tacoma’s 25-foot coffee pot music spot has served up over 80 years of concrete kitsch.

The final resting place of one of the most sensational guitar players of all time was created only after his father got the rights to his music.

The highest point in Washington state is a volcano covered in glaciers.

A wall of chewing gum moonlights as collective art.

For thousands of years, Native American hunters drove buffalo straight off this cliff in Montana's Yellowstone Country.

High in the Rockies the third largest statue in the U.S. opens her welcoming arms, and lights up the night sky.

A smoke stack so large, the Washington Monument could fit inside!

"Polynesia on the Plains."

A 6-mile-long lake created by an apocalyptic seismic event and the deadly chain reaction that ensued.

The only road through the heart of Glacier National Park.

This amazingly preserved Gold Rush town is a historian's dream.

The hike through a narrow river flanked by the 2,000-foot-tall walls of Zion Canyon is one of the best in the world.