Castel Sant'Elmo

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Castel Sant'Elmo
Naples, Italy
The main entrance to Castel Sant'Elmo seen from northeast
Coordinates	40°50′38″N 14°14′20″E / 40.843815°N 14.239005°E / 40.843815; 14.239005
Site information
Owner	Comune di Napoli City of Naples
Controlled by	Napoli Beniculturali Naples Ministry of Culture
Open to the public	Yes
Condition	Good
Site history
Built	1200s (first building) 1537 (today's building)
Built by	? (1200s building) Don Pedro de Toledo (1537 fortress)
In use	Still in use today
Materials	Tuff

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.