Castel Sant'Elmo is a medieval fortress located on Vomero Hill adjacent to the Certosa di San Martino, overlooking Naples, Italy.

The name "Sant'Elmo" derives from a former 10th-century church dedicated to Sant'Erasmo, shortened to "Ermo" and, finally altered to "Elmo".

Located near the upper terminus of the Petraio, one of the city's earliest pedestrian connections between upper and lower Naples, the fortress now serves as a museum, exhibition hall, and offices.

There are now several permanent art exhibits in the castle, including a railing more than 30 feet long carrying an braille inscription, installed in 2015 above the drill grounds on the northernmost wall of the castle near the west corner.

Two other installations include a large metal helmet near the railing and a conical metal sculpture, approximately 15 feet in diameter at the bottom, with cutouts in the drill grounds.

I suggest visiting the place early in the morning, that way you will avoid the long line at the entrance for issuing tickets, you will enjoy the place in peace and you will be able to take panoramic photos as as the time goes by a lot of people gather. I really enjoyed my visit here. clean toilets, delicious coffee, well-kept courtyard. Unique opportunity to see the entire city at a panoramic level. Definitely worth a visit.