Tunnel Under Former State Hospital – Traverse City, MI admin July 25, 2021 Architecture / TravelBlog The majestic state hospital grounds and complex have been transformed into shops, businesses and condos. Certain buildings as well as the underground infrastructure such as these tunnels are well preserved. You Might Also Like Shanghai from on high November 8, 2009 Church through wall – Milos (Μήλος), Greece October 11, 2016 Grand Palace Spires – Bangkok July 25, 2008