Remarkably intact Roman stone fortifications have encircled this Spanish city for centuries.

This Victorian water wheel is affectionately nicknamed "Little Isabella."

J.R.R Tolkien, C.S. Lewis, and other "Inklings" met at the Oxford pub to discuss the now legendary fantasy stories they were writing.

The spot where Oxford garnered its name was also home to a medieval philosopher and includes a house covered in statues.

A theatre built to house the rowdy Oxford graduation ceremonies became the stage for a debate about God's existence.

This 11th century tower is said to be the oldest building in Oxford.

Used as an example in one of the first dictionary entries for "museum" in 1706.

A cornucopia of gargoyles adorns the oldest portion of Oxford’s Magdalen College.

This hollow steel globe is the second-largest in the world.

Depending on how it is measured, this lighthouse can claim to be the tallest in Europe and the tallest conventional lighthouse in the world.

A mini-Stonehenge in the corner of the North Carolina state capitol grounds.

Memorial to the 89 children killed during the NATO bombing of Serbia.

Legend holds that the Ancient Greek goddess of love once bathed in the waters of this grotto.

Believed to be inspired by the Trevi Fountain in Rome.

A gigantic mechanical bull rages over unsuspecting passengers at Birmingham’s central station.

More than 500 years after his death, a medieval ruler's remains were found buried under a parking lot.

Marvel at this immense work of art that greets arrivals to the city.

These Stolpersteine located in Spain honor Republican soldiers who perished at the hands of Nazis after the fall of France.

The world's most elegant power lines.

The defensive tower was built centuries ago to warn locals of Berber pirate attacks.

An enchanting landscape of ancient sandstone structures eroded into otherworldly shapes.

An ancient Roman theatre restored to its former glory in the Spanish city of Cartegena.

Bacteria and algae give the salty water its bubblegum hue.

This abandoned Soviet circus is slowly being restored to its Communist-era glory.