METRO POLIS refers to the reciprocal relation between the urban environment and the metro system in Tokyo, Japan. In November 2016, its largest fish market was planned to relocate, leaving behind a vast territory in one of the central wards. As a strategy to connect this post-industrial territory to the everyday of the Tokyoites, a metro station is proposed in a former market hall of the Tsukiji Shijio in Chuo-ku, Tokyo. The design aims to release the potential of the transport hub as an urban centre, by redefining the metro station as a generous, inclusive place for the Tokyoites. Also, an urban plan is proposed which combines housing, commercial functions and offices.