
The Shiganshina District is a town located on the south edge of Wall Maria. The district is built within an outcrop of Wall Maria.
The canon characters Eren, Armin, and Mikasa are from Shiganshina.
Five years prior to the main story, the Colossal Titan broke down the front gate of Shiganshina, allowing the town to be overrun by Titans. Shortly afterwards, the Armored Titan broke down the back gate, fully breaching Wall Maria and forcing humanity to abandon Wall Maria and retreat behind Wall Rose. It is also the first city to be invaded by the Titans after a century of peace.
In our story line due to the current construction of Wall Maria Shiganshina is a Well guarded district, sporting a great deal of soldiers being at the forefront of titan invasion, and as such, much conflict occurs here.
(Description done with the help of Robotic SaintSilver)