One of my highlights of my trips to New Brunswick, Canada was to Minister's Island. It was the summer estate of Sir William Van Horne, a former President of Canadian Pacific Railway responsible for overseeing the major construction of the first Canadian transcontinental Railway.
While a lot of the furnishings of the estate were sold off before the Province of New Brunswick bought the property, the Billards table and score board were left because the table was too big and heavy for the buyers to move.
Minister's Island is only accessible during low tide by driving on the seafloor. The 50-room home has walls constructed from sandstone. The island has a windmill, gas plant, carriage house, garage, circular bath house and farm buildings.