A medieval castle in the middle of rural Texas.

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

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

This beautiful grotto is one of those places where you can't believe you're just outside Austin.

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

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

The saga of the massive nut begins and ends in Texas.

The tree is thought to be the oldest oak in Texas and was once crowned state champion for its monumental size.

This collection of bronze hands comes from astronauts, presidents, baseball greats, and more.

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

A private collection of massive steel monsters guarding a Texas pipe works.

The world's tallest statue of an American hero.

This hollowed salt dome is the largest oil storage facility in the world, hoarding 250 million barrels of crude oil.

This tiny, hurricane-resistant house in Galveston is one of the city's most notable architectural oddities.

A decaying concrete oil tanker served as a disposal location for bootleg hootch.

Scale replica of China's ancient terracotta tomb warriors and Forbidden City are the side project of an eccentric millionaire.

Fantastic collection celebrating the final send-off.

An oddities shop packed with twisted treasures inspired by Oscar Wilde and Edgar Allan Poe.

At the "Garage Mahal" in Houston, car culture is about more than just driving.

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

A park filled with vibrant mosaics created by more than 300 folk artists.

This memorial marks the devastating day that Texas City was destroyed in a daisy chain of exploding ships.