Here, we’ve highlighted 12 walled cities worth invading—er... visiting—to get a taste of that quintessential, timeless beauty of Spain's architectural heritage.

Spain has an extraordinary number of entire towns and cities recognised as World Heritage Sites, places where the streets ...

Known as “the city of darkness,” Kowloon Walled City was a crowded, tangled metropolis of 60,000 people with little political or legal oversight.