It's a real downer trying to Photoshop 500 people out of your would-be-prizewinning Parthenon photo, but in winter it's not an issue. All summer stresses – crowding, tourist pricing, intense heat, queues, air pollution – more or less disappear. It's the best time to explore the country's ancient heritage and get to experience local culture.

Tip: By all means do some island-hopping, but most accommodations close in winter.