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

Just like in Hollywood, Madrid has also a forgotten walk of fame.

The little church's beautifully frescoed ceiling has earned it the nickname “the Sistine Chapel of Madrid.”

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

A whimsical brother of the nearby Fallen Angel statue takes the falling part quite literally.

This sweet-toothed bear searching for snacks has been a symbol of Madrid for decades.

A stone slab in Madrid marks the point from which the distances of Spain's national roads are measured.

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

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

This funky former tobacco factory is one of the most striking examples of Madrid's cultural diversity.

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

Five million people are laid to rest here, more than the population of Madrid itself.

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

The lengthy skeleton of one of the tallest Spaniards of all time is on display in Madrid.

A lush indoor jungle fills this bustling Madrid transportation hub.

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

An exact replica of a colossal Olmec head sits atop a pyramid within a Madrid traffic circle.

The ruins of an ancient stadium that hosted gripping chariot and horse races.

A display of torture devices used in the Spanish Inquisition and other scourges of medieval Europe.

This 47-story "M" needed 20 years to be completed

A well-restored ancient archaeology site gives a real feel for life during the Roman age.

Fascinating exhibits of prehistoric and ancient artifacts displayed with a uniquely modern touch.

A poignant memorial shows the widows and children left heartbroken by the worst fishing disaster in Scottish history.

A tribute to the intrepid explorer and his crew who perished in terrible conditions on an ill-fated expedition to the Arctic.