The only international border marker within the United States.

Of course the grave of JFK's assassin is surrounded by conspiracy theories.

Two massive and unstable sinkholes are yearning to unite, and their consummation could be catastrophic.

Beauty and history abound in this remote West Texas canyon.

A spur fit for a giant sits just off Highway 281 in Texas.

A recreated Stonehenge stands in a country field, complete with Easter Island moai heads standing as sentries.

Over 100 million years ago, beach-bound dinosaurs left permanent marks on San Antonio's landscape.

A 131-year-old wunderkammer of Texas history.

The 40-foot-tall votive candle is the largest of its kind.

These boots are made for selfies.

The saga of the massive nut begins and ends in Texas.

The world's largest squirrel statue clutches a pecan bigger than your head.

A 24-hour vending machine restocked daily with homemade full-sized pecan pies.

The pit stop from "The Texas Chainsaw Massacre" now serves beef and pork barbecue, not people.

A medieval castle in the middle of rural Texas.

This historical air terminal in Houston is slowly becoming an aviation museum dedicated to the city's aeronautical history.

255 feet of suds, scrubbers, and blow dryers.

The short-lived history of a new republic and British control in West Florida.

This float factory takes the mask off of Mardi Gras and lets visitors see where the magic happens.

One of the few existing, fully functional Showbiz Pizza animatronic shows.

A dramatically eroding canyon thousands of miles from the desert.

The world's second-longest burning light bulb.

Belly up to the bar in Cowtown, don't forget to buy some boots.

A modernist landscape of water and sci-fi concrete.