Beneath the southern end of the Golden Gate Bridge is the “Gibraltar of the West Coast,” a fort built to protect the San Francisco Bay from naval attack.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

Mobsters came for a soak in the hot springs, and stayed for the illegal gambling and bootlegging.

A sharp bend in a dramatic river canyon cut through red rocks.

A historic area for shopping and dining in Ketchikan's former red-light district.

A 30-mile-long glacially-carved canyon leads to a massive pair of glaciers.

Known as the “Official Greeter of Juneau,” this dog still welcomes ships and their passengers to Alaska.

Often mistaken for an office building, inside this venue is an amazing collection of Native Alaskan art.

This historic collection of Native Alaskan artifacts was resurrected through a partnership between the WPA and tribal artisans.

A rare chance to get up close and personal with a 13-mile ribbon of ice near downtown Juneau.

Texas’s first suspension bridge is still carrying people across the Brazos.

A tribute to a great Texas blues musician.

Controversially claiming the title of world's biggest bass drum, UT's Big Bertha was once made radioactive by the Manhattan Project.

Locals dubbed it the "Owl Building" because of its bird-like appearance.

Official museum, hall of fame, and repository of the Texas Rangers.

Modern technology and live displays tell the story of the Pacific during WWII for the Internet generation.

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

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

255 feet of suds, scrubbers, and blow dryers.

Home to an endangered salamander, a full moon celebration, and a large spring-fed outdoor swimming pool.

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

Austin’s local mountain isn’t really a mountain at all.