Giovanni Battista Antonelli

His most important works was a series of watchtowers along the coast of Mediterranean Sea in Spain.

He designed and built some military fortifications on the Mediterranean coast of the Iberian Peninsula for Spain during the second half of the sixteenth century.

For that, similarly, had already done in the Kingdom of Sicily in 1547 and 1552 with Ferramolino and Pietro del Grado, the nobleman was accompanied by an expert, the Antonelli, derived from inspection and the planned construction of the fortifications of port city of Cartagena, the coast of the Kingdom of Valencia and the African ports of Oran and Mazalquivir.

In the early 1580s he participated in the designs of fortifications planned to be built in the Strait of Magellan to prevent the entry of non-Spanish ships to the Pacific from the Atlantic.

[1] The Spanish settlement attempt of the strait had however by 1587 turned into failure with only a few colonist surviving starvation and disease.