Agios Georgios Kastro

This 16th-century Venetian castle enjoys stellar views from atop a conspicuous pyramid-shaped hill 7km southeast of Argostoli. Kefallonia's capital for 200 years, it's now in ruins, and approached via a short pedestrian street from the adjoining village. Strolling around the unshaded, wildflower-strewn site takes around 20 minutes; relax afterwards over a coffee or snack in the gardens of the neighbouring Kastro Cafe or a full meal at nearby Il Borgo.