You can find a pretty view in different places in Naples. From Castel dell’Ovo you can get an amazing view on the water with the Vesuvius, Sorrento and Capri in the background. However, you can find the prettiest view at Castel Sant’Elmo.
Castel Sant’Elmo is a castle on top of a hill, you can see it from almost everywhere in Naples. There’s not much to see in the castle, you really pay for the pretty view.
You can walk to the castle, but it’s steep and probably very hot when you’re in Naples. It’s a good choice to take the funicolare (the cable railway). It’s easy, quick, cheap, fun and you’ll get a few minutes to relax your muscles.
We took the funicolare from Montesanto to Morghen. From Morghen, it was a 10 minute walk.
If you also want to do something cultural in that area: you can find museum and San Martino next to Castel Sant’Elmo. Unfortunately, it was closed on the day we visited, but I was told you can find great art there.