Right in the heart of the city, at the foot of the grand Alcazaba, you'll find a genuine piece of ancient history, the Roman Theatre. It's incredible to think this was hidden for centuries until its rediscovery in the 1950s. You can wander through the ancient structure, sit on the stone tiers, and imagine the spectacles that took place here 2,000 years ago. It's a truly special spot where you can feel the layers of the city's past come together, and the best part is, entry is completely free.