A series of playful yellow penguins share a serious message about the environment.

This foreboding building was the headquarters of the terrifying Spanish Inquisition in Mexico.

Legend tells how a Spanish soldier disappeared from this isolated sentry box without a trace.

The blinking light atop the iconic landmark has been sending secret messages for decades.

This taxidermy horse was a Civil War hero.

The small first-floor apartment where the author wrote her Pulitzer Prize-winning book 'Gone with the Wind.'

A charming 17th-century alley is lined with secondhand bookstores and antiquarian shops.

An isolated island home to one of the oldest English-speaking communities in the region and Maryland's state dessert.

This staircase in a lush tropical grotto was built by enslaved laborers and renamed to honor Queen Victoria's role in ending slavery in the British Empire.

The walls and streets of the ancient city are peppered with penises.

The first memorial dedicated solely to the Black troops who fought for the Union.

This beloved Baltimore spot features caged dolls, a giant Pez collection, and many, many mannequins.

The childhood home of the Sultan of Swat is just a line drive away from Oriole Park at Camden Yards.

A lone gunner's station is all that remains of a replica Spanish Fort in Florida.

This Florida resort community is where the Amish come to have fun in the sun.

A line of blue paint marks the route of the inaugural parade.

These haunting ruins of a 700-year-old Prehispanic city have witnessed centuries of wars and massacres.

This giant iron playfully pays tribute to an early 20th-century architectural trend.

A wonderful display of arts and crafts handmade by local artisans in the Southern Appalachians.

This rare basilica nestled right in downtown Asheville is an architectural marvel, inside and out.

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

This North Carolina museum is keeping the pinball craze alive, with a little Space Invaders on the side.

This bridge is haunted by the ghost of a distraught mother.

Tombstones carved to look like tree trunks are used for multiple generations of family members.