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

A former electrical substation is now home to an eccentric junk art masterpiece.

A collection of 100 brains preserved in jars on the UT campus.

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

Continuing the tradition of the dime museum in style.

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

One part antique store, one part curiosities hodge-podge.

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 apocalyptic seismic event creates a deadly chain reaction that ends with a 6-mile long lake developing within weeks.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

An architect's childhood fantasy treehouse made real.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

A beautiful geyser under environmental threat.

Recovered from the brink of extinction, at home in the Financial District.

This concrete tangle of square pipes has stood as a proud thorn in the city's side since the '70s.

A Barbary Coast watering hole built into a Gold Rush shipwreck.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.