1st Floor (Aincrad) | Sword Art Online Wiki | Fandom
The 1 Floor (第1層, Dai 1-sō) of Aincrad is geographically the largest floor. It is almost completely circular with a diameter of ten kilometers (eighty square kilometers). The 1 Floor is roughly the same size as Saitama Prefecture Kawagoe City (population 330,000). The main settlement on the 1 Floor is the Town of Beginnings, but there are also numerous other towns and villages on this floor.
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