Illescas is a
peninsula in northwestern
Peru. It forms the southern boundary of the Sechura Bay, the largest bay in Peru. Sechura Bay also includes the northernmost portion of the
Pacific Ocean that is under the influence of the Peru-Chile or
Humboldt Current. The Illescas Peninsula is located in the department of
Piura, and is scarcely inhabited. Part of Illescas was declared a reserved zone. Illescas is also the name given to the highest point of the peninsula (500 m.), the Cerro Illescas.