There is a tower called Torre Tavira in Cádiz where you can see basically the whole city. They also have something called Camera Obscura, on a white table they show you the reflection of the city and everything moving right now which is very cool! A guide is showing a group of people and at the same time explaining and talk about the history of the city. I loved the show and that the guide spoke in spanish and then english, that way I got to practice my spanish! It only costs a few euros and it's definitely worth a visit!

Here are some photos from my visit there!