Algade

«Algade» is a city on the 50th floor of Aincrad, and it is the location of Kirito's home base. «Algade» holds Agil's shop. It is also the biggest city in Aincrad, since the Starting City became the Army's main base, while being smaller than Starting City in size. According to Kirito, «Algade» is a messy city, with several alleyways that takes a few days to get out, inns that look like once a player goes in they will never come out, and shops a player doesn't know what they are selling.

Sword Art Online
As this floor is Kirito's home, he comes here often. However, he is first seen on this floor after coming back from being in the front lines, leveling up in the Labyrinth. He sees a «Ragout Rabbit» while walking home, and proceeds to kill it. He then use a Teleport Crystal to warp to Algade. Kirito goes to Agil's shop to sell is S-rank item to the merchant, only to take it back when Asuna arrives to talk to him, and the two leave for Salemburg.

Later, when the game is cleared, Kirito and Asuna watch as «Algade» and the other floors collapse into the clouds.