The gatehouse is the only surviving original structure. This two story structure has several features designed to cope with the harsh Hokkaido winters. While it uses the standard two roof design (upper story and smaller entrance roof), the rear of the gate has only one on the upper story. This roof was extended further than usual to provide cover from snowfall. The roofing uses copper sheeting over wood shingles rather than traditional terracotta tiling (which doesn’t hold up well in extreme cold). A modern reconstruction of the tenshu replicated the three interior/exterior floor original structure, and the castle grounds now serve as a park for the people of Hokkaido. | The gatehouse is the only surviving original structure. This two story structure has several features designed to cope with the harsh Hokkaido winters. While it uses the standard two roof design (upper story and smaller entrance roof), the rear of the gate has only one on the upper story. This roof was extended further than usual to provide cover from snowfall. The roofing uses copper sheeting over wood shingles rather than traditional terracotta tiling (which doesn’t hold up well in extreme cold). A modern reconstruction of the tenshu replicated the three interior/exterior floor original structure, and the castle grounds now serve as a park for the people of Hokkaido. |