The Argostoli road, heading towards Sami, crosses the island via the mountains. Walkers will enjoy tackling Mt Ainos (1 628m), a giant by Greek island standards. It emerges from a thick forest of dark Cephalonian firs. The road leads to the observatory and its huge dishes, before a track continues to the nature park entrance. Agios Gerasimos Monastery (16C), nestled in mountain scenery 11km from Argostoli, is worth a visit.