Prospect Place House Prospect Place, also known as Trinway Mansion and Prospect Place Mansion, is a 29-room mansion built by abolitionist George Willison Adams (G. W. Adams) in Trinway, Ohio, just north of Dresden in 1856. Today, it is the home of the non-profit G. W. Adams Educational Center, Inc. The mansion is listed on the National Register of Historic Places and the Ohio Underground Railroad Association's list of Underground Railroad sites. This home featured many new and, for the time, revolutionary innovations. It had indoor plumbing which included a copper tank cistern on the second floor which pressurized water throughout the house. Two coal stoves had copper tanks (under pressure from the cistern system) which heated water and allowed the home to have both hot and cold running water service. This is the second house to stand on the same foundation. The first house was destroyed by an arson-related fire shortly after its completion. The mansion was rebuilt after the fire, with modern fire stopping added to it. The interior walls of the current house are solid brick, and there is a two-inch layer of mortar between the first and second floors of the house to block fire. Prospect Place also featured a unique refrigeration system to cool milk, cheese, butter, etc. A primitive form of "air conditioning" was created by bringing cool basement air into the living quarters during the summer months via ducts in the outside walls.
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