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

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

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

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

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

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 oldest restaurant in the world is this old-world Spanish eatery, still known for its suckling pig.

A secret garden in a picturesque Edinburgh village has inspired artists for centuries.

An enigmatic modern marker left next to a historic Roman site.

Inside this building is another country within Rome, a sovereign entity without a physical territory.

A 15th-century monumental Latin inscription on this house celebrates Lorenzo Manilio's love for Rome.

Among the busts of heroes of the Roman Republic of 1849, there is also a statue of a boy and his dog.

A large replica of a monumental Roman inscription is located on the side of this museum.

The meaning behind this triumphal Roman arch was a mystery until the early 20th century.

This small church was constructed over the ruins of three temples dating to the Roman Republic.

This hermitage celebrates the legend of Emperor Constantine's healing from leprosy.

An unremarkable wooden wheel built into the side of one of Rome's oldest hospitals was part of a policy to reduce infant exposure.

A small cell adjacent to this church was once the bedroom for a renowned saint.

An 18th-century post box used to alert the church of sick and ailing foreign pilgrims.

Plaques on its facade commemorate the Tiber's most destructive deluges.

Believed to be the remains of the lost Temple of Minerva, this nymphaeum has been known by its misnomer to this day.

A deep mark on the remains of a Roman temple, believed to be left by a legendary warrior.