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

The gloomy ruins that inspired Bram Stoker to bring Dracula to life.

A statue marks the exact spot where The Boy Who Never Grows Up made his first literary appearance.

Stockholm's narrowest alley is barely over two feet wide.

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

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

An ancient and majestic fortress that played an integral role in Portugal's road to independence.

A favorite with sightseers, this Norwegian funicular provides easy access to a stunning view of Bergen and its environs.

One of the most breathtaking railways in Europe also takes one of the steepest climbs, from fjord to mountain plateau.

The burning of this 12th-century church kicked off a campaign of Norwegian Black Metal terror.

Home to three historic ships from the age of Vikings.

This permanent collection of preserved bodies taken from Irish bogs is one of the leading authorities on such morbid mummies.

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

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

This Hungarian castle was built out of cardboard and wood until it proved so popular that it got upgraded to stone.

A trail of iron footwear stands as a monument to the thousands executed along this riverbank during WWII.

An ancient octagonal weather station named for the eight Greek gods of wind.

This ancient Greek place of assembly and marketplace is being revealed layer by layer below the modern Athens cityscape.

Monasteries on rock pillars, once accessible only by frayed ropes.

This irregularly shaped sea fortress has defended not one but three different sovereign states.

This little gem in the Gulf of Riga has a very rich heritage and distinct culture.

The Guardian of Tallinn.

This small Estonian hill is covered in hand-made twig crosses that are said to bring good luck.

Beneath Denmark's Højbro bridge, a bronze merman and his seven sons forever mourn for the mother and wife who left them for land.