ChÃ¢teau Montebello is a resort hotel built on the north bank of the Ottawa River at Montebello, Quebec. It is often called the world’s largest log cabin or building. About 10,000 red cedar logs, transported by the CPR from British Columbia, were used in the construction of the star shaped log cabin which was opened on 1 July 1930. The architect gave the log building a modified French chÃ¢teau style. Originally called the Seignory Club, it is now a resort hotel with a full complement of facilities suited for government and business conferences.Note: On its grounds may be found the historic home of Louis-Joseph Papineau, a leader in the Rebellion of Lower Canada.