The pit stop from "The Texas Chainsaw Massacre" now serves beef and pork barbecue, not people.

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

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

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

Housed in a century-old building, this museum's dedicated not just to soft drinks, but to the free enterprise system.

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

A modernist landscape of water and sci-fi concrete.

The world's only museum devoted solely to the art and collection of action figures.

Travel through the hidden underbelly of the city in colorful tunnels filled with art and history exhibits.

A half-mile long and three stories high, this bridge over the Des Moines River Valley mimics a descent into a mine shaft.

The “American Gothic" artist's largest works hang in an Iowa State University library.

The world’s largest combined collection of U.S. and Russian aircraft got its start in a poultry building.

This ostentatious Italianate palace of an Oklahoma billionaire is filled with several themed mini-museums.

Home to the story of the outlaw turned funhouse mummy, Elmer McCurdy.

The "World's Largest Underground Business Complex," a 55,000,000-square-foot city underneath Missouri.

The world's largest collection of fine-scale miniatures and one the nation's largest collections of antique toys.

One of the largest Masonic temples in the world, created at the height of the oil boom in ostentatious style.

Step back in time at this 1950s display home, built to showcase once cutting-edge electric amenities.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

Antique automobiles, phonographs, organs, and farm equipment.

Wedding chapel's mysterious spiral staircase said to be miraculously constructed.

This innocuous New Mexico storefront was once the secret jump-off spot for Manhattan Project scientists.

A preserve with 75,000 ancient drawings remains the realm of public – not just scientific – exploration.

One man’s passion for gas stations is on display along the Rio Grande in northern New Mexico.