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

Tucked away down this Baytown alley exists a one-of-a-kind art exhibit of technicolor umbrellas.

It specializes in outsider art and artifacts of secret societies.

Ruins of a once-opulent grand Victorian resort.

There is an unmarked red button hidden over Houston's Buffalo Bayou that is just begging to pushed...

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

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

An abandoned castle owned and ignored by Masons carries a cursed history.

The island of Lanai in Hawai'i is a paradise for cats and cat lovers.

Enjoy all the trappings from 1912 aboard this Titanic-themed restaurant.

Macabre headstones carved with winged skulls, dancing skeletons, and pithy reminders of impending death.

This one-woman cemetery was a small civil rights victory.

A peg-legged tightrope walker did not reveal his name as he was dying, and so he was buried as “Rope Walker."

Campus tradition says couples who walk beneath this enormous oak will stay together forever.

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

This massive oak tree has ties to the first native tribes of the region and the founders of Texas.

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

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

Two small markers remember the Alamo's feline protectors.

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

At Monet's beloved home you can still see the Japanese bridge, waterlilies, and weeping willows that were the subjects of some of his most iconic paintings.

The Lone Star plaque hangs in a bombed-out bunker in Normandy to honor a Texan colonel's heroic actions on D-Day.

The feral felines of Roosevelt Island have a small army of allies and an abandoned hospital all to themselves.

The 18th-century home was disassembled into 253 cases and brought all the way from the other side of the world.