Controversially claiming the title of world's biggest bass drum, UT's Big Bertha was once made radioactive by the Manhattan Project.

Colorful curls of hand-blown glass form a captivating tower in San Antonio's Central Library.

Legend has it the commander of the defenders drew a fateful line in the dirt with his sword just before the final battle.

The second largest roadrunner in the world stands 11 feet tall in his West Texas town.

This is probably not the Target you're looking for.

An ivy-covered arch bridge dedicated to Tejano music singer and legend Rosita Fernandez.

Witness to many historic moments in early Texas history.

In Paris, Texas, even Jesus wears cowboy boots.

A gorgeous garden oasis with winding paths, stone bridges, and a troubling history.

The highest point in Texas is capped by a big silver pyramid.

A collection of massive stacked rocks in Texas includes a snarky note on the benefits of modern technology.

A Texas-sized particle collider that was abandoned due to its Texas-sized budget.

A modernist landscape of water and sci-fi concrete.

The northernmost international land border crossing in the United States.

Thanks to a quirk of elevation this gift shop produces magic doughnuts that are found nowhere else on Earth.

If drivers cross the rumble strip on this stretch of Route 66 at just the right speed it plays "America the Beautiful."

An abandoned quicksilver mining town surrounded by the Big Bend parks.

On a dusty county road sit the ruins of a ghost town's abandoned church.

No telescopes, no power, no gift shop: The Observatory of Chichen Itza, one of the world's oldest observatories, takes astronomy back to basics.

Clap your hands at the base of the pyramid, and the song of a sacred Mayan bird will echo through the air.

Every equinox this Maya pyramid puts on a spooky ancient light show.

The unique collection includes bronze cast handprints of some of America's most famous astronauts.

A building so large that it has its own weather.

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