is an underground city located in central Hiroshima. It is the key underground network connecting public transport services around the Kamiyachà  area. It contains two stations of the Astram Line and three stations of the Hiroden Main Line and the Ujina Line. This underground network is the only way to connect to those five stations. At the center of Kamiyachà  Shareo, there is a transportation and tourist information center.
Kamiyachà  Shareo is located underground around the Kamiyachà  intersection between Rijà Â-dà Âri (avenue) and Aioi-dà Âri (street). Astram Line's train runs under Kamiyachà  Shareo, around Rijà Â-dà Âri and across Aioi-dà Âri. The Hiroden Main Line and Ujina Line's streetcar run at street level on Aioi-dà Âri and Rijà Â-dà Âri.
Kamiyachà  Shareo was opened in 2001 as a public underground network with a shopping area by the Hiroshima City and the Hiroshima Prefecture governments. The area is operated by Hiroshima Chikagaikaihatsu which was established by city, prefecture, financial institutions and private enterprises. On the corner of the Kamiyachà  intersection, there was a traffic control tower. And around the intersection, there were pedestrian crossings on the streets.
is a Japanese urban planning and facility management company based in Hiroshima, Japan. The company operates Kamiyachà  Shareo.