This thesis is an investigation of U scRBAN M scERIDAN; the structure formed through relations rather than material and stimulation of it by inserting a park into everyday life. H scOUSTON D scOWNTOWN T scUNNEL S scYSTEM has been selected as a site because of its accessibility, controlled climate and slow speed. Although It is not a typical park, its characteristic rhizomatic labyrinth presents the system as a museum-like P scARK which is interwoven among the system of tunnels. The tree may be the same as one found in a typical park, however, this context changes the tree into an object in a cultural exhibition, working as a A scCUPUNCTURE needle to stimulate the relationship between people and the things in their everyday life. Although Urban Meridian has been forgotten, it continues to form the real life of the city. Understanding the city though this invisible structure can give us a clue to acupuncture and healing; because existence is always beyond the object itself.