An architect's childhood fantasy treehouse made real.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

A curious carving hides on a marble column in the Mosque-Cathedral of Córdoba.

Spain's unique Mosque-Cathedral has been a place of worship for both Muslims and Christians throughout its history.

The final resting place of the great navigator, or maybe his brother.

This failed condo development was reborn as a street art hub.

Resting place of the Texas A&M canine mascots, who watch the game from the grave with their own miniature scoreboard.

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

Colorful curls of hand-blown glass form a captivating tower in San Antonio's Central Library.

This is probably not the Target you're looking for.

An abandoned, decaying sculpture garden built by an eccentric physician in the 1920s now looks more like a forgotten cemetery.

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

Foragers once flocked to this big beautiful bayou to hunt for pearls.

Minimalist modern art on a repurposed military base in rural Texas.

These boots are made for selfies.

Life's work of sculptor Elisabet Ney remains preserved in her last studio.

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

A gorgeous garden oasis with winding paths, stone bridges, and a troubling history.

Civil War dumping ground for the bodies of terrorized Union sympathizers.

A spring-fed pool so deep it's used for scuba diving as well as swimming.

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

A Texas cave network is home to some of the world's most spectacular-looking and bizarrely named mineral formations.

Free public park and gardens filled with peacocks and peahens.

A store full of vintage and indie toys designed to bring out the kid in even the crustiest of adults.