Right inside the Alhambra, this stunning piece of Renaissance architecture stands in beautiful contrast to the Moorish palaces surrounding it. Step inside the Palace of Charles V to discover its most breathtaking feature: a massive, open-air circular courtyard that feels like a Roman amphitheater. It's a peaceful spot to take a break, and since entry is free, you can just wander in and soak up the grandeur before exploring the two museums housed within.