An underground passage originally constructed as an air-raid shelter during the Spanish Civil War.

The magnificent sanctuary is Spain's first purpose-built structure of its kind.

After the Moriscos, the descendents of the former Muslim population, were expelled from Spain this empty village was re-populated by families of sausage makers from the island of Mallorca.

Cascading waterfalls mark the gateway to the ancient burial place of Clan Macnab.

This collection of Neolithic monuments make up one of The U.K.'s richest archeological landscapes.

A close look reveals that the Scottish monument is just slightly off-kilter.

Now famous as the "Harry Potter bridge," this impressive concrete viaduct has long been an icon in its own right.

The longest staircase lock in Britain.

Inside a Scottish castle hangs the tattered remains of a flag with murky origins and supposed magic powers.

One man spent 10 years building a spectacular section of road because no one else would.

The most iconic structure in Scotland has been home to bishops, colonels, and Sean Connery characters.

This pyramid is dedicated to all those who suffered martyrdom for civil and religious liberty in Scotland.

It's said this was once the home of King James V's pet lion.

The colorful stairs are made with marble from the world's major quarries.

This 16th-century house tells the city's history through old artifacts and quirky tales.

An ornate "graveyard" for some of the country's forlorn building relics.

Now home to a drinking establishment, this building has a macabre history.

A verdant 17th-century-style garden hidden along Edinburgh’s Royal Mile.

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

Overlooked by many, the two famous Scottish warriors guard the main gate of Edinburgh Castle.

A six-ton wedding present for the King of the Scots.

The final resting place of soldiers' loyal canine companions.

The most loyal of little dogs, or a Victorian era publicity stunt?