This popular pitstop lives up to its name.

The outcropping is graffitied with the name of the beloved musical Muppet television series.

Thousands of pieces of art have been carved into the rock at the site of an ancient volcanic eruption.

This innocuous New Mexico storefront was once the secret jump-off spot for Manhattan Project scientists.

This is one really big nut.

Giant origami sculptures tucked into desert scenery beckon passers-by to explore further.

In the remote high desert of New Mexico, a strange array of poles beckon fury from above.

If you look closely at the oldest bridge in Paris, you might notice hundreds of ugly faces leering from its sides.

The remains of the medieval wall that once surrounded Paris with ties to the construction of the Louvre.

The oldest continuously occupied public building in the United States.

A natural formation that resembles a camel resting in the New Mexico desert.

A small side chapel in Santa Fe's basilica is home to the oldest statute of the Virgin Mary in North America.

An immersive environment that is part haunted house, part choose-your-own-adventure, and part jungle gym.

In Tucson a giant metal snake helps pedestrians cross a busy highway.

The world's largest military aircraft cemetery.

This sweet-toothed bear searching for snacks has been a symbol of Madrid for decades.

A lush indoor jungle fills this bustling Madrid transportation hub.

Madrid's romantically ornate crystal palace has been offering shelter to plants and art for over a century.

This giant pocket watch is the third iteration of a local landmark that has been standing just off the Santa Fe Plaza for over 100 years.

The oldest structure in a beachside California city was built to serve eight students.

The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.

Historic funicular railway, believed to be the shortest railroad in the world.

One of the most scenic stretches of road in America winds between some of the country's oldest trees.

Quite simply the largest tree in the world (by volume).