High seas history comes to life at this immersive museum with an on-site tavern.

This city's cultural center is in a restored Spanish colonial home from the 1800s.

This historic, pentagon-shaped fort houses the City Museum.

A well was built by the Spanish before their conquest of Mexico.

Half-hidden by grassy slopes, this striking Spanish colonial fort is now a museum of underwater archaeology.

A spring water stream jumps through a walkable "bridge" cavern and a narrow canyon.

A fairytale-like grove with a crystal-clear spring bubbling under the shade of a massive ancient tree.

The building that houses this museum is as historic as its collection.

The largest cave shaft in the world is home to thousands of birds and popular with BASE jumpers.

Extraordinary sculpture garden created by an eccentric English poet.

An oversized bluebird statue returns to its rightful place on Vilano Beach pier.

This shrine commemorates the site of the first known Catholic mass in the United States.

The walls of America's oldest masonry fort famously "swallowed" cannonballs.

In this case, 'zero' marks the spot where the iconic Old Spanish Trail ends.

A tribute to Ponce de Leon's supposed quest for eternal youth.

Two men built this castle on the Florida coast as an artistic “landscape sculpture.”

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

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

Anyone can play paleontologist at this quarry that has Cambrian fossils galore.

A remote field of nearly pristine sand dunes in the heart of the Mojave Desert.

An improbable creek near Death Valley, not far from the oldest surviving Euro-American structure in the Mojave Desert.

Step back in time at an outdoor living history museum where New Mexico's cultural traditions come alive.

Tucked away in a secluded canyon, this hidden hot spring’s thermal waters have been soothing soakers for generations.

This vast and otherworldly landscape is one of the largest dune complexes in North America.