Ruined 11th century abbey built by King David I in Edinburgh, Scotland.

Famously misunderstood wonder of the ancient world

It houses the remains of a 17th-century version of the Titanic.

A 250-year-old timepiece-automaton adorned with golden mechanical birds, which still sing to this day.

One man's exploration of the human form, including the bizarre and delightful "Man Attacked by Babies."

Home to three historic ships from the age of Vikings.

Birthplace of the "Cat in the Cradle" and a cluster of iconic, original windmills that let the Dutch tame the seas.

The Bloemen Route, or “Flower Route”, stretches 25 miles through prime Dutch tulip country as a result of “tulip mania,” the world’s first economic bubble.

Unsurprisingly, Holland is home to one of the most magnificent flower gardens in the world.

The marble facade hides a little-known medical museum with early surgical instruments and rare copies of canonical texts.

This strange bovine gargoyle is said to have been put in as a passive aggressive form of revenge.

An incredible menagerie of more than 3 million taxidermied animals at the oldest science museum in Europe.

Five candy-colored villages on the Italian Riviera.

Go inside to really appreciate this 500-year-old technological masterpiece.

2300-year-old Roman road connecting the empire.

The oldest operating pharmacy in the world features 800-year-old recipes.

This community on a small Venetian island has taken to painting their houses in bright neon hues.

The modern birthplace of Irish freedom.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

A series of caves under Castle Hill that once held the prisoner Vlad Tepes, better known as Count Dracula.

From Austrians to Nazis to Soviets, this historic Budapest fortress has a history as complex as the city itself.

Built in 1870 at the bridge that connected Buda and Pest, this spectacular incline railway was almost lost forever during World War II.

Where commuters walk through remnants of an ancient Greek necropolis.

Replicas of Apollo's leonine stone guard cats still line a sacred row in Greece.