Mountainous route in Peloponnese, quite interesting. No traffic at all on a week day. Look out for fallen rocks and gravel at points.
Totally worth an ascending both for the ride and the views. Many bicyclists during the "hot" months.
Nice route through massive wetlands and open country.
For those heading south from the Alps and feel like "I want some more" before the autostrada or a very nice afternoon ride for the locals.
Narrow mountain road with very low traffic, nice bends and great views.