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

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

The only museum dedicated to the history of the "Magic Lantern," a medieval slide projector.

An acoustic anomaly with a mysterious cause.

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

The largest land animal skull ever discovered.

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

One believer transformed a local curiosity into proof of Vikings on the Great Plains.

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

A modernist landscape of water and sci-fi concrete.

Visitors can walk over the largest concentration of Columbian mammoths to have died from one event.

One of America's first dinosaur parks gives a window into Depression-era paleontology.

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

This zombie-themed restaurant stands out in the heart of corn country.

A four story, football field-sized, nine-grotto creation made of shells, minerals, and rare stones.

Enter the Forest of the Elves.

A Foundry on a Sleepy Street.

A Perpetually Under construction Park.

This lab's maddening silence is good for business but bad for sanity.

Explore the History & Technology of Electronic Communication

One of the steepest streets in the United States makes an intriguing challenge for cyclists.

Deep scars on the earth left by the Ice Age.

Take a drunken tour inside the world's largest known geode.

A sealed test tube said to hold Thomas Edison's dying breath was given to the inventor's friend and mentee, Henry Ford.