Secret refuge and museum of the Duke of Florence.

Over 50 exquisite hand-painted Renaissance maps decorate a Medici storage room.

The oldest operating pharmacy in the world features 800-year-old recipes.

An enormous natural sandstone bridge in Kentucky.

Kentucky's anomalous peninsula projecting into the Mississippi River, site of legendary earthquakes and local feuds.

Rumored to be the famed pirate's lookout tower, this historic stone structure is now just watching for tourists.

The iconic boulevard is the perfect place to catch sight of a bicycling skeleton, a levitating Satan, or a chef with his head stuck in a pizza.

A former steam-powered mill from the 1800s is now an industrial park with a giant steel dragon slide.

A temple to modernity, tucked away amid Barcelona's more well known museums.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

This cemetery features modernist statues as strange as its name.

A beautiful but toxic fountain of mercury.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

A mouldering Colombian bull ring stands as a reminder of the country's complicated relationship with a brutal sport.

An inspired museum dedicated to the patron saint of enslaved people, inside the cloisters where he lived and died.

This elegant Colombian fortress was one of the torture headquarters for the Spanish Inquisition.

The caldera of this mini-volcano has been turned into a naturally heated mud bath.

Believe it or not, the now-ubiquitous California avocado originated in Guatemala.

This restored colonial house was once home to the botanist responsible for bringing avocados to the U.S.

Mesoamerican monoliths and zoomorphic stones covered in royal visages, ancient mythology, and grand celestial events.

Experiencing Guatemala's sensory-exploding church is a blunt reminder of European influence.

The remnants of an archaeological camp stand within Tikal National Park.

Central America's deepest lake is actually a volcanic caldera, surrounded by three volcanoes.

One of the world’s most colorful cemeteries, where each pigment is symbolic.