Long Walls
458—The Long Walls: The construction of the long walls gave Athens a major military advantage by forming a barrier around the city-state and its harbors, which allowed their ships to access waterways without threat from outside forces. Two walls were constructed from the city to the sea, one to Phaleron and the other to Piraeus. Athens relied on these long walls to protect itself from invasion, while sending off its superior vessels to bombard opponents' cities.