The largest and most well-preserved petroglyph site in the Verde Valley.

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

This comprehensive collection features Native American artifacts dating back centuries.

This non-binary preacher formed a religious movement in the region of New York later known as the “Burned-Over District.”

Although called a funicular by both its owner and the locals this historic railroad is actually a rack and pinion system.

Hike, ski, or snowshoe to a backcountry yurt that serves up gourmet, four-course dinners.

This 1930s-era Route 66 Tulsa landmark was moved, restored, and filled with neon.

After a water tower painting was accused of being an ad, a simple fix was made that gave the city a motto.

At 11,500 feet in elevation, there is no toilet in the state closer to the sky than this one.

This museum dedicated to the history of the medical bone trade and human osteology.

The model behind the iconic 3D test model.

This Old West hotel, the longest in continuous operation in the state of Arizona, is claimed to be haunted.

A strange Georgian folly sits atop a lonely hill.

The largest single-building tribal cultural center in the U.S. is an expansive museum in Oklahoma City.

This 47-foot chile pepper sculpture welcomes Scoville heat unit obsessed tourists to the Big Chile Inn.

An abandoned incline railway site is now a green space with six acres of trails connecting hilltop neighborhoods.

A volcanic core jutting above the plain between the Snake and Boise Rivers, a marker identifies the reference point for all U.S. Government Surveys in Idaho.

This ferry carries passengers across the Rhine propelled by no engine or paddles but by the river's current.

After fleeing the Syrian civil war, chef Malakeh Jazmati began serving exceptional renditions of her homeland's cuisine in Berlin.

The first mountain submarine had its initial and last voyage in 1898.

The last remaining 19th-century mile marker along the historic Ocean Parkway.

This vivid painted ceramic sculpture evokes the expansiveness of the prairie sky.

This harrowing climb along West Virginia's jagged spires is one of the only Via Ferrata on America's east coast.

The rusting hulk of a 250-foot-long merchant vessel remains where she grounded on the shore of Hudson Bay.