Ancient Greece Map:

Use a different color or a different font for the different categories to keep your map neat and make the locations clear. 

Cities:
Athens
Byzantium
Corinth
Delphi
Ephesus
Knossus
Miletus
Mycenae
Olympia
Piraeus
Sparta
Thebes
Troy

Mountains:
Laurion (Laurium)
Olympus
Parnassus

Waters:
Aegean Sea
Black Sea
Bosporus
Gulf of Corinth
Hellespont
Ionian Sea
Mediterranean Sea
Propontis
Saronic Gulf

Battles:
Chaeronea
Marathon
Plataea
Thermopylae

Regions:
(Persia)
Asia Minor
Attica
Boeotia
Epirus
Euboea
Ionia
Laconia
Macedonia
Peloponnesus
Phocis
Thessaly
Thrace

Islands:
Chios
Cos
Crete
Delos
Ithaca
Lesbos
Melos
Rhodes
Salamis
Samos