Greece Is Surrounded by Seas, Not Highways

Greece has no bordering highways. It is a peninsular and archipelagic nation bordered by four seas:

• Aegean Sea – east
• Ionian Sea – west
• Mediterranean Sea – south (Cretan Sea, Libyan Sea subdivisions)
• Libyan Sea – south of Crete

Land borders (north): Albania, North Macedonia, Bulgaria, Turkey.

The question likely confuses "highways" with "waterways" or maritime boundaries. Greece's geography is defined by its ~13,676 km coastline (11th longest globally) and thousands of islands—not highways.