This towering volcanic plug stands out among the dramatic formations that dot this otherworldly desert valley.

Its history includes dinosaur fossils, cattle rustlers, Georgia O'Keeffe, and a mythical giant rattlesnake named Vivaron.

This spectacular track has run continuously since 1882.

This nearly abandoned town was once a thriving mining community until a series of fires.

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

The remnants of the base where US Army troops learned how to fight in extreme conditions.

This old train trestle and collapsed tunnel once allowed the railroad to negotiate the steep slopes of the Colorado Rockies.

Displaced highlanders would take shelter from the wet Scottish climate under the large walled bridge at Glasgow Central Station.

This two-legged horse statue celebrates a beloved cartoonist and his quirky characters.

The biggest drug trafficking passage between Mexico and the U.S.

These boots are made for selfies.

This grape-growing paradise is one of the oldest vineyards in North America.

A small town that began as a western movie set.

This subterranean passage reveals the city's mining history as well as its legendary terrors.

A Lovecraftian altar of nightmarish bronze chairs sits ominously on a boardwalk in Puerto Vallarta.

This singular Mexican structure is considered a masterpiece of the Tapatía architectural school.

For decades, the parade of apostles that left the Expiatory Temple of Guadalajara remained hidden inside one of the towers.

One of the oldest hospitals in the Americas is now decorated in hallucinatory murals.

The Rio Lerma (Chignahuapan) in El Salto, Mexico, is one of the most polluted rivers in the world. It’s covered in white foam, and falling in can kill.

This mural condenses 96 miles of one of Scotland's best-known trails into a unique art display.

This stately monument has been wearing a traffic cone hat for decades much to the delight of the locals.

Inscribed on the gate are the names of 29 figures from the University's first five centuries.

A miniature beach in the middle of the desert.

These gleaming gypsum sand dunes are the second-largest in North America.