The Alhambra Palace
The Alhambra Palace in Granada, Andalusia, Spain, was constructed in the 10th century as both a fortress and palace, built by the last Muslim rulers of Spain. It was then used by the Christian rulers, and subsequently fell into disrepair for centuries. Restorations began in the 19th century, and it is now one of Spain's biggest tourist attractions. It is a UNESCO World Heritage Site.