Commonly acknowledged as the only public monument to the Devil himself.

A lush indoor jungle fills this bustling Madrid transportation hub.

An ancient Egyptian temple in the middle of Madrid, Spain.

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

The remains of a convent turned military barrack in the heart of Madrid.

In this 400-year-old hotel in Madrid, you'll find a comb in every room, an old clock, and maybe a ghost.

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

A rare set of strings by famed instrument maker Antonio Stradivarius is on display in the Royal Palace.

After the queen of Spain had a dream where these statues fell and crushed her, they were removed from the palace and given new homes around Madrid.

This amazing example of Valencian Art Nouveau looks more like a cathedral than a public market.

This massive fiberglass Gulliver turns every visitor into a Lilliputian.

On the wall of this medieval walkway, a symbol of the Spanish Inquisition.

Saint Joseph was said to heal the deaf and blind, but it was a much smaller miracle that got him canonized.

This generously endowed statue once stood guard outside a Roman home.

An early 20th-century bullring converted into a modern shopping center.

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 beautiful but toxic fountain of mercury.

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

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

Step inside the first house designed by Catalan architect Antoni Gaudí, considered to be one of the first Art Nouveau buildings.

This former Baroque palace on the historic Calle Montcada is a rare architectural gem and was once the meeting place of an aristocratic scholarly society.

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

Turntable anonymously received orphans, alms, and groceries.

This home designed for chocolate magnate Antoni Amatller is an exquisite treasure-box of Catalan Modernism.