Hidden behind a wall, Spanish nuns distribute their signature sweets on a revolving tray.

A completely underwater art museum sends a stark message about humans' impact on the environment.

The earliest known map to show America, discovered by accident at a Paris bookshop.

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

The world's largest wooden structure.

A landscape decorated with enormous skull sculptures.

This whimsical winery by Antoni Gaudí looks ripped from the pages of a fairytale.

This Funeral Hearse Museum represents the finest in cadaver transportation.

Natural stone arches form a walkable "cathedral" at low tide, then disappear entirely when the water returns.

The morbid items in this small and hidden museum are not for the weak stomached.

Spanning the El Chorro gorge, this pathway used to be one of the most dangerous crossings in the world.

A museum dedicated to the Spanish occult in a town that was terrorized by the Inquisition.

This cafe offers a curated collection of treats and tipples made by monks and nuns.

A stately palace has been converted into the world's largest cannabis museum.

Bacteria and algae give the salty water its bubblegum hue.

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

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

An accidental trick of light casts the perfect shadow of a pilgrim of the Camino de Santiago against the cathedral wall.

Deep into the lower floors of Pike Place, find a date with fowl fate.

Castro's communist ice cream mothership has been serving five-scoop "salads" for over 50 years.

A unique museum dedicated to the Gullah-Geechee people, housed within an old oyster cannery.

This monument claims to display the first pot used to cook a famed Southern stew.

A museum dedicated to the strange and extravagant costumes and memorabilia of the mummers, a tradition older than Philadelphia itself.

The house that Frank Lloyd Wright "(shook) out of his sleeve at will" at the age of 86.