This postmodern apartment block was designed to be a vertical neighborhood.

Madrid's last horchata kiosk is a blue-and-white beacon of refreshment.

Among the oldest structures in Madrid, these Moorish walls once guarded the medieval city of Mayrit.

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

This macabre masterpiece of a mural is one of Francisco Goya's "Black Paintings."

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

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

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

A lush indoor jungle fills this bustling Madrid transportation hub.

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

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

Friendships have been forged over ham and eggs every Wednesday morning for nearly a century.

An academy where anyone can train in the exciting acrobatic sports of parkour and freerunning.

First LEED-certified gas station in the United States.

A visionary, futuristic sculpture in Los Angeles that never met its extraterrestrial potential.

A quirky collection of figurines backdropped by city views is hidden next to a popular restaurant in the Hollywood hills.

The quiet canyon has a tumultuous history involving a doomsday cult.

Dozens of feral felines rule a segment of Hollywood's only graveyard.

A common entry point to the Griffith Observatory trail holds its own wonders.

Hidden above a drug store on a nondescript corner of Lincoln Heights is a private clubhouse for intrepid explorers.

This traditional garden in the San Fernando Valley doubled for Star Fleet Academy, and is irrigated entirely by wastewater.

A little barn in the middle of the city preserving Hollywood treasures since 1985.

Once strictly off-limits, this lower level housing curious and priceless vehicles of the Petersen Automotive Museum is now open to the public.

The famous animator's private station house and man-cave was the birthplace of imagineering.