Tokyo's subway network is operated by two companies, the Toei Subways with four lines, and Tokyo Metro (formerly known as Eidan Subways) with eigth lines. Together, they densely cover central Tokyo, especially the area inside the Yamanote circle and the areas around Ginza and Shitamachi.
Note, that at their terminal stations, the trains of some subway lines continue to operate on the tracks of different companies on suburban train lines. For example, the Chiyoda Subway Line is directly connected with the suburban Odakyu Line at Yoyogi-Uehara Station, and some trains on the Hibiya Subway Line continue to run on the tracks of the Tokyu Toyoko Line at Nakameguro Station.
Related Tags: Japan Tour, Tokyo Disneyland, Mount Fuji, Tokyo Tour, Japan Subways, Japan Cultures, Japan Sushi