Arakawa, Tokyo to the southwest, Bunkyo. South of Arakawa is Taito, and southeast is Sumida. The area was mainly agricultural in the Edo period. In 1651, Kozukappara, the Tokugawa's largest execution ground (now located next to Minami-Senju station), was built. Beginning in the Meiji era, the area became industrial as factories were built on the water front. In 1932, it became one of the 35 wards of Tokyo City. MIAT Mongolian Airlines's Tokyo Branch Office is on the fifth floor in the Tachibana Building in Arakawa. Iseki, a tractor and engine equipment manufacturer has its Tokyo head office in the ward. Arakawa
Two Rivers, Alaska Pole or the area's military installations, Eielson Air Force Base and Fort Wainwright. Businesses in Two Rivers include one general store, restaurants, a post office, a laundromat and the former HIPAS Observatory, which closed in 2011. Most people who move to Two Rivers are attracted by the rural nature of the community and the extensive network of trails in the area. The trail system is popular with dog sled mushers, horseback, snowmachine, motorcycle and ATV riders, hunters, hikers, and others. Two Rivers borders the extensive Chena River State Recreation Area. Two Rivers is especially popular with both recreational and professional