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 Alhambra, Granada, Spain

Located right outside the city of Grenada, this UNESCO World Heritage Site fortress stands as a reminder of the Arab rule of the city centuries ago. The Moorish fortress was originally built in the 9th century but was transformed into a palace of splendor during the 14th century. The ornate structure now stands as part palace, part fortress and is mesmerizing in its detail and lush beauty. Tourists flock to this historical site every year to be mentally transported back in time to get a glimpse of what it was like to be 14th-century royalty.