Iroquois Long House.
Longhouses were and are built by native peoples in various parts of North America, sometimes reaching over 100 meters long (330 ft) but generally around 5 to 7 meters wide (16-23 ft). The construction method was also different: the dominant theory is that walls were made of sharpened and fire-hardened poles (up to 1,000 saplings for a 50 meter house) driven into the ground had a roof of leaves and grass. Strips of bark were then woven horizontally through the lines of poles to form more or less weatherproof walls with doors usually in one end of the house, although doors also were built into sides of especially long longhouses.They were long and sometimes had fireplaces that kept them warm. "from Wikipedia"

.

 

.