The upstairs reading room is packed with millions of rare books, literary manuscripts, and historical treasures.

Some islands... they come, they go, especially on Lake Travis.

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

An enormous pink granite batholith, long attributed with spiritual powers by the Tonkawa Indians.

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

Modern technology and live displays tell the story of the Pacific during WWII for the Internet generation.

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

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

Ruins of a once-opulent grand Victorian resort.

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

The quirky gift from West Berlin for the 1968 World's Fair still stands in Hemisfair Park.

A 131-year-old wunderkammer of Texas history.

A National Historic Landmark with a scenic clock tower and park filled with deer and peacocks, plus a military museum.

Established in 1925, Kiddie Park claims to be the oldest amusement park in the U.S. - a cozy little time warp nestled in a shady corner of the modern world.

These boots are made for selfies.

This massive redwood tree has a hole in the base big enough to drive through.

One of the most scenic stretches of road in America winds between some of the country's oldest trees.

This ultra-modern California span is actually a titanic solar clock in disguise built by famed architect Santiago Calatrava.

Trails through lava-carved tube-caves display sparkling bacteria and a rich history.

A lighthouse built to save lives that took quite a few with its treacherous location.

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

On the Oregon coast there is a natural hole that seems to be draining the sea.

Only known mainland rookery of the threatened Stellar sea lion.

No one knows how this Pacific Northwest spruce tree came to have so many trunks.