An architect's childhood fantasy treehouse made real.

A beautiful geyser under environmental threat.

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

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

An experimental, automotive replica of Stonehenge.

The highest bridge in America was built for an almost unnervingly small amount of money.

At one time this small mining village was the highest town in America but now it sits abandoned while the mine churns on.

Strange red rock formations that have been attributed to a higher power for hundreds of years.

Paranormal experiences in this hotel's room 217 led Stephen King to write "The Shining."

The highest paved road in North America winds its way up Mount Blue Sky in Colorado to an altitude of 14,130 feet above sea level.

Air Force Academy Chapel made of 100 identical tetrahedrons works to inspire those of all religions.

Travel through the wholesome amusements of yesteryear at this charming miniature village.

Explore some of the most unique vehicles in history along with a cast of unsettling mannequins.

Wall to wall taxidermy at Denver's oldest and most exotic steakhouse.

A downtown park built on top of unclaimed graves.

A mysterious dark-skinned Christ statue has been this town's religious center for centuries.

A pocket of jungle amidst urban expansion in Panama.

Soldiers were buried next to Lee's house in the center of Arlington Cemetery to dissuade the general from reclaiming his property after the war.

Florida might be at its most surreal in this museum devoted to the famed Spanish artist.

Decades before the scandal, this staircase on the river was a literal "water gate."

A former major munitions plant that has been converted into a sprawling art space.

At 207 feet, one of the world's longest continuous escalators.

Home to items never before seen by the public.

Frank Lloyd Wright's most iconic home dangles over a Pennsylvania waterfall.