The Royal Alcázar of Seville ranks among Spain's most stunning historical treasures and yes, it's the filming location for Dorne in "Game of Thrones." This 10th-century fortress-turned-palace showcases an improbable yet magnificent blend of Mudéjar, Gothic, and Renaissance architecture. Having visited nearly a dozen times over the years, I've found the intricate tilework and ornate plasterwork are somehow more impressive with each visit—though I still discover new details I'd previously missed.

Book tickets online (alcazarsevilla.org) and arrive early—preferably the first morning slot—to enjoy the spectacular gardens before the crowds arrive. The gardens might actually outshine the interior, especially in spring when the orange blossoms perfume the air. I typically start in the Patio de las Doncellas to avoid the initial rush, then make my way to the Admiral's Hall before most tour groups arrive there.

Standard admission runs €12.50, with opening hours typically 9:30 AM to 5:00 PM winter/7:00 PM summer. For the complete experience, spring for the audio guide (€6) and consider the separate ticket for the Royal Apartments.