This city square dates back to the Scottish Enlightenment and was home to some of Scotland's brightest minds.

This extinct volcano rises above Edinburgh and is special for its panoramic views over the city.

Touching this 18th-century Scottish philosopher’s toe allegedly conjures good fortune.

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

This otherwise ordinary close on the Royal Mile constituted the end of the world for Edinburgh’s poorest residents.

A sweet symbol marks the place where torturous executions were once carried out.

A book bound in the skin of an infamous criminal, along with countless other specimens.

Near the former site of numerous witch burnings, this lavish Edinburgh mainstay pays homage to Scotland's brutal history.

The modern birthplace of Irish freedom.

Whitewashed mosque contains the world's largest carpet.

This artificial archipelago was supposed to resemble a map of the world.

A faithful reproduction of Al-Jazari's enormous water clock.

On any given day this sprawling market houses literally tons of government-regulated gold, gems, and precious metals.

This living legend of maritime history is enjoying a second life.

The world's largest frame offers spectacular views of the city's past and present.

This futuristic building is yet another architectural wonder in Dubai.

A preposterously luxurious hotel with gold-plated iPads, Rolls Royce chauffeurs, and a staff that trains by watching "Downton Abbey."

This indoor ski resort has a mountain contained inside a mall.

Belfast's namesake river still winds below the city center, hidden from sight.

A palatial former bank building now houses what may be the poshest art venue (and former Tesco) in Belfast.

It is said a heartbroken man visited the gap every day to stare blankly out at the sea.

These engineering masterpieces are a dominant feature of the Belfast skyline.

This massive monument has been telling the time for 150 years—at a slight angle.

It was once nicknamed "the most bombed hotel in Europe."