Exit Yahiro station (Keisei line) and head down to Ara kawa (river). Turn right and head down the street alongside the river wall. After you pass Tokyo Glass Maniacs, look out for a sign for Umayabashi (ウマヤバシ) heavy machinery. After you pass this, turn right and HIGHTI is in a ruined building on the right. It's about 10 mins from the station in an industrial area and a little hard to find. Map