Some believe this tree to be more than 1,500 years old.

Long before Europeans arrived, Native Americans built an artificial island out of shells that has withstood a millennia of hurricanes.

This ranch on the banks of the Rio Grande is home to a little-known LGBTQ history of Mary Cabot Wheelwright, Marie Chabot, and two-spirit Navajo weaver Hastiin Klah.

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

After being abandoned for decades, Oklahoma’s first air-conditioned theatre was reborn in the new century.

A crew of die-hard train buffs spent decades turning a defunct stretch of railway in Oklahoma City into a museum now home to over 50 antique and restored trains.

The largest cattle market on earth holds live auctions open to the public every week.

A historical house furnished with authentic pieces from the Victorian period.

The largest protected conservation area in the Ozarks—a region that stretches into northern Arkansas and southern Missouri.

A quirky mishmash of Route 66 memorabilia and other throwbacks from the past.

A Route 66 filling station that was designed to resemble the Hagia Sophia, and is now the symbol of an arts district.

A likeness of Da Vinci's mysterious painting smiles at passersby from the side of a barn.

A small section of native wilderness on a university campus

What was once a summer home next to a waterfall has now become littered with graffiti and children in swimsuits.

The only remaining sod house Oklahoma built by a homesteader in 1894.

Is this 47.7-mile stretch of highway the longest straight road in the United States?

Located in the world's highest-altitude Dark Sky Community, this observatory welcomes amateur and professional astronomers alike.

This massive oak tree has ties to the first native tribes of the region and the founders of Texas.

This stone windmill marks an old, mysterious homestead in what is now central Austin.

This unassuming North Austin neighborhood was built to test the novel idea of home air conditioning.

Home to an endangered salamander, a full moon celebration, and a large spring-fed outdoor swimming pool.

A free, canine-friendly alternative watering hole near the more famous Barton Springs.

Artist James Turrell's ode to dawn and dusk on the campus of Rice University.

This abandoned building made of petrified wood was once a hotspot for buying moonshine.