You are welcome in Greece with your UAV. But you beter register it, to get more privileges.
Maximum take-off weight: No limit
Maximum hight:120 meters / 393 ft (with permit), 50 meters 164 ft. (without permit)
Maximum horizontal distance: 500 meters 1,640 ft (with permit), 50 meters 164 ft (without permit).
Maximum distance persons:
Minimum age: -
Distance Airports / Heliports: 8 km / 4.17 mi
Night flights: Prohibited
Prohibited: City center of Athens, not above historical buildings, crowded areas, beaches.
Fines when violating the UAV rules: EUR 500 - 250,000.-
Useful link: Hellenic Civil Aviaton Authority (HCCA)
Contact information: email@example.com / +30 21089 1600
Form to register your UAV: Form. (Send it to HCCA)
No Fly Zones Greece