This amazing abuela became a diehard metal fan late in life and an icon of Madrid's '80s rock scene.

This fascinating and poignant museum chronicles every imaginable aspect of Spanish colonialism in the Americas.

This small and often-overlooked museum holds some of Spain's finest artistic treasures.

The only urban monument in the world designed by the great surrealist painter Salvador Dalí.

The remains of the second-oldest zoo in Europe can be seen within these library gardens.

The unfinished final resting place of some of Spain's most prominent politicians.

Madrid's romantically ornate crystal palace has been offering shelter to plants and art for over a century.

Abandoned for decades, trains still pass through the now-restored remains of one of Madrid's first metro stations.

This lucky bronze frog was gifted to Madrid by a casino.

One of Madrid's oldest trees, with a long and colorful history, resides in El Retiro Park.

Over two centuries old and counting, Madrid's massive botanical garden contains one of Europe's only desert environments.

The world's brightest bioluminescent bay.

Puerto Rico's oldest rum producer started its 140-year-old business with "a little barrel."

This tiny home was originally a narrow alleyway.

The short hike is worth the stunning views and crystal blue waters of a secluded beach.