An abandoned lighthouse located on the cliffs of Barbados.

This staircase in a lush tropical grotto was built by enslaved laborers and renamed to honor Queen Victoria's role in ending slavery in the British Empire.

This series of Baroque passageways in Vienna's cultural center mix old architecture with modern art.

The solemn exterior conceals an opulent interior of this 17th century church.

An exquisite Baroque church in Vienna's old town.

The Habsburgs' royal collections of art and wonders.

Vienna's giant wonder wheel had a starring role in one of the greatest noir movies of all time.

Baroque celebration of the end of the Great Plague of Vienna.

Located right outside of Vienna, visitors can take in expansive views of an ethereal forest.

Trick water gardens from 1619 featuring a 200 piece mechanical theater powered by water.

Op-art architecture designed for happiness.

The topiary maze at the Habsburg hunting lodge.

Built to give thanks for the passing of a plague epidemic, this cathedral is a one-of-a-kind architectural hybrid.

A series of waterfalls so massive they straddle the border of Argentina and Brazil.

This stunning mass of ice spans 121 square miles and is still growing.

A scenic UNESCO site that doubles as a habitat for various forms of wildlife.

According to a local legend, this old castle could only be built after a woman was immured in the walls.

This breathtaking monastery was established by Saint Benedict himself 1,500 years ago.

Italian poet Dante Alighieri is entombed in this small mausoleum in Ravenna, and his hometown of Florence has never been too happy about it.

The mark of the Devil's horns on a marble column in Milan.

A volcanic old faithful, Stromboli has been erupting continuously for the last 2000 years.

In a city that boasts four separate inclined cable railways, this is one of the busiest funicular lines in the world.

This park on the outskirts of Rome boasts two ancient Roman aqueducts and a medieval tower.

Rome's first modern graffito is all that is left of a peaceful protest from the 1970s.