久保田藩
refers to the ruins of a Nara period fortified settlement located in what is now the city Akita, Akita Prefecture, Japan. It is also sometimes referred to as “Fort Akita”. The name is sometimes also used for Kubota Castle, an Edo period Japanese castle which served as the headquarters or the Satake, "daimyō" of Kubota Domain, rulers of northern Dewa Province under the Tokugawa shogunate.