For overviews and over 40 itinerary suggestions, day trips, ideas and island hops start with the two synopsis pages
the Athens Guide with 20 of the best and easiest day trips such as Athens Beaches, Cape Sounion, 300 Thermopyle, Delphi, O. Lukas Monastery, Mycenea, Epidavros, Ancient Corinth, Acro-Corinth, Mystras-Sparta, Euleusis, Lavrion, Marathon, Mt. Pendeli, Mt. Parnitha, Oropos, Vavrona, Ramnous, 1 day 3 island cruise, Aegina, Poros, Kea, Hydra, Euboea
Next is the the Greek island Overview page and its drop down menu providing you plenty of other itinerary hints and ideas. Like Islands with Major Ancient Ruins, Medieval Castles, Guided Tours, Scuba Diving , Party Atmosphere, Fewer Visitors, Great Beaches, Golf Courses, Family Atmosphere, Fewer Tourists, 5 Star Hotels, Health & Medical Spas, Airports, Campgrounds, Internet Cafes, Gay Scenes.
Major Greek Islands Ancient Sights overview, Aegina - Temple of Aphaia, Santorini - Ancient Thira, Santorini - Acrotiri, Crete - Heraklion Museum, Crete - Knosso, Crete - Phaestos, Crete - Phourni, Crete - Malia, Crete - Gortys, Crete - Agh. Triada, Crete - Tyllisos, Delos, Kos - the Asklipion, Rhodes - Lindos.
Athens: National Archeology Museum,
Old Acropolis Museum, New Acropolis Musuem (its finally open),
Benaki Museum, Byzantine Museum,
Mainland Peloponnese Delphi Museum, Olympia Museum, Epidavros Museum.
Crete - Heraklion Museum.