Hike the ruins of a zoo that was shut down by an unsolved murder.

The bridge continues the legacy of President Franklin D. Roosevelt's New Deal policy.

A tribute to the little-known group of women who were the first ever to fly aircraft in the U.S. military.

This historic theater's pipe organ still accompanies silent films just like it did in 1929.

A school-themed restaurant where gastronomy is the core curriculum.

This pump on the bad side of Victorian London betrayed a horrifying revelation about the water supply.

It's where the final scene of the beloved Tom Hanks movie was filmed.

A medieval castle in the middle of rural Texas.

Twenty churches beautifully painted by 19th-century Czech and German immigrants in Texas.

A 24-hour vending machine restocked daily with homemade full-sized pecan pies.

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.

This hidden sculpture garden full of Wild West art is one of San Antonio's best-kept secrets.

A 2,500-pound wooden nickel makes this woodworking museum easy to spot from the road.

This museum showcases the history and contributions of the U.S. Army to the medical industry, both on the battlefield and off.

An acoustic anomaly with a mysterious cause.

Once in disrepair, the house where the 1983 film was shot has been restored and turned into a museum.

The modest childhood home where the baseball legend and Yankees star learned to hit from both sides of the plate.

An unexpected but incredible collection of wildlife dioramas spanning rainforests, swamps, forests, and plains.

The show pony of cave systems, Fantastic Caverns manages to live up to its name.

According to local lore, this narrow passageway through two large rocks was accidentally created by the devil himself.

The U.S. Supreme Court's secret Cold War relocation facility in the mountains of North Carolina.

Enormous lake at the bottom of a unique cave system.

This granite rock face is named for the magnificent reflection that occurs when the sun hits it just right.