Thousands of years ago, Indigenous people painted images onto these canyon walls that are still on display today, provocative, mysterious, and enduring reminders of the people who lived here long ago.

This vintage theme park is peak Christmas kitsch—and it's open all summer.

A Buddhist monastery tucked away in the mountains of Colorado.

A preserve with 75,000 ancient drawings remains the realm of public – not just scientific – exploration.

This museum started as a collection of Manhattan Projects and continues to add exhibits as they are declassified.

A small metropolis of Pueblo cave dwellings have been carved right into the hillside of this national monument.

This building is a recreation of the gatehouse that separated Los Alamos from the outside world during the era of the Manhattan Project.

This southwest-styled home in Santa Fe claims to be the oldest house in America thanks to an ancient bit of foundation.

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

Wedding chapel's mysterious spiral staircase said to be miraculously constructed.

These Pre-Columbian petroglyphs contain representations of birds, deer, hunters, and even some early Native flute players.

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

These molds for fiberglass statues have formed an eerie, accidental sculpture park.

This cave holds a surprisingly colorful variety of geological oddities.

"Looks so real, it's scary!"

A bizarre house filled with an astounding array of collections.

Prolific outsider artist Sid Boyum's concrete sculptures add whimsy to Madison's Schenk-Atwood neighborhood.

One of Frank Lloyd Wright's final works was this UFO church.

A museum dedicated to the mysterious cryptid.

An enormous park-like oasis, full of famous Chicagoans' graves.

A circus of light and sound forms a sensory ode to an iconic train that will never pass through town again.

Chicago's largest cemetery is full of beautiful Victorian monuments and more than a few ghost stories.

Cemetery featuring rare glass-fronted columbarium.

Chicago's North Park Village was once the largest municipal sanatorium in the country.