A priceless collection of the Nation's cryptologic history.

The site of the gruesome massacre—and maybe cannibalism—of five men, a tragedy that made Alferd Packer infamous.

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

Inside this mountain lies several kilometers of breathtaking caves.

An emerald-green grotto just a short trip from Austin.

Home to the largest urban bat colony in North America, estimated at 1.5 million bats.

Continuing the tradition of the dime museum in style.

Turning night into day in Victorian-era Austin to thwart a serial killer.

This simple frog painting created by musician Daniel Johnston embodies the spirit of Austin.

A popular swimming hole that hides one of America's most deadly diving spots.

The summer home of the largest colony of bats in the world.

Three hundred years of preserved Spanish colonial history in San Antonio.

An abandoned, decaying sculpture garden built by an eccentric physician in the 1920s now looks more like a forgotten cemetery.

A priceless work of art created by the saint's own blood sister hangs in a San Antonio basilica.

Abandoned railroad tunnel is home to a colony of three million Mexican free-tail bats.

Tracks near this Texas nature site were once thought to support the Creationist belief that man and dino coexisted.

Housed in a century-old building, this museum's dedicated not just to soft drinks, but to the free enterprise system.

A mythical chimera first sculpted in 1936 as a mix of the main animals of Texas livestock.

A taste of Middle Earth, in the middle of the Bayou City.

Foragers once flocked to this big beautiful bayou to hunt for pearls.

An old abandoned pharmacy building in Texas is brimming with collectibles and images of the little tuxedoed pooch.

A wealth of pop culture statuary and green chile dishes give this roadside restaurant clout.

Search for traces of the dinosaurs that roamed here more than 90 million years ago.

A Bhutanese temple gifted from the isolated Himalayan kingdom is now a surprising cultural gem located at the University of Texas at El Paso.