Guy House was the home of Harbour Master James Odgers Guy. Its contruction is typical of a frame farm house reminiscent of the mid to late 1830's. Opened in 1985, as the administrative centre of the Museum, Guy House also houses the Sydenham Country Store and the Oshawa Community Archives.

Guy House was the home of Harbour Master James Odgers Guy. Its contruction is typical of a frame farm house reminiscent of the mid to late 1830's. Opened in 1985, as the administrative centre of the Museum, Guy House also houses the Sydenham Country Store and the Oshawa Community Archives.

This home was built by John Robinson, a Quaker, in the early 1850's. Constructed from locally-made yellow brick, the house has a gambrel or barn-type roof. A simple family home for much of its life, Robinson House now contains a series of galleries and changing exhibits focusing on various topics in Oshawa's history from native settlement through to early twentieth century industrial expansion and development.