At the northwestern end of the Peloponnese, from the Gulf of Patras and just before the Kyllini, extends the protected area of the Strofilia Forest and the lagoon of Kotychi. Its length reaches 22 kilometers, while the width ranges from about 0.5 to 4 kilometers.
The wider area occupies an expanse of about 143,000 acres, while the National Park, without the marine ecosystems, about 60,000 acres. Of the 442 species of birds that exist in Greece, 261 have been observed in the area of the Strofylia National Park (approximately 59%).