Muros Largos
Although long walls were built at several locations in ancient Greece, notably Corinth and Megara, the term Long Walls ( ) generally refers to the walls that connected Athens main city to its ports at Piraeus and Phaleron. Built in several phases, they provided a secure connection to the sea even during times of siege. The walls were about 6 km in length, initially constructed in the mid 5th century BC, destroyed by the Spartans in 403 BC after Athens' defeat in the Peloponnesian War, and rebuilt again with Persian support during the Corinthian War in 395–391 BC. The Long Walls were a key element of Athenian military strategy, since they provided the city with a constant link to the sea and thwarted sieges conducted by land alone.