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

Conflicting markers on its floor tell a tale of two city centers in San Antonio.

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

Craggy concrete faces are hidden in the walls of this artificial cave along the San Antonio River.

The quirky gift from West Berlin for the 1968 World's Fair still stands in Hemisfair Park.

Milan's duomo is covered in beautiful carving including a curious "dinosaur-like" beast.

This grisly effigy displays an early Christian martyr who was skinned alive and beheaded.

Breathtaking and huge 430 year old maps of Italy.

Legend says this mysterious stone head belongs to a woman who was petrified by an alchemist.

Next to the Leaning Tower of Pisa is a cemetery home to ancient sarcophagi and disturbing murals.

In Florence's great Duomo, a 26 foot fresco honors a mercenary famous for attacking Florence.

This bronze boar's snout has been rubbed to a golden sheen by visitors seeking good fortune.

This strange bovine gargoyle is said to have been put in as a passive aggressive form of revenge.

This Roman statue is missing a limb from when the Venetians stole it from Constantinople during the Crusades.

This palatial spiral staircase was so unusual the name "snail" was given to the noble family who built it.

Two stone columns flank the grand Venice square, but there were supposed to be three.

A giant desert bird that once swung music fans at Coachella now has a home in a nearby traffic circle.

The oldest continuously occupied public building in the United States.

A small side chapel in Santa Fe's basilica is home to the oldest statute of the Virgin Mary in North America.

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

Ruins of a once-opulent grand Victorian resort.

A hidden three-foot-wide house separates these two regal churches.

Elaborate tile work in this railway station tells the story of Portugal.

In Coyoacán, a pair of coyotes crown a public fountain in reference to the ancient Aztec name of the borough.