All remaining traditional houses have strong fire protections (Hikaeshi, great walls of North and south, access dirt floor), therefore, even there were four fire disasters, those houses still exist today.
Features of Ohara Town
Dashigeta: the supporters of 2nd roofs.
Namako Kabe: the wall made with Kawara.
Sodekabe: Fire protection on walls. It designed as the cloud or water.
Mushigomado: windows of 2nd floor storage.
... is a hotel for Daimyo during Daimyo parade. This building was built in late 18th century.
... is a hotel where Samurai of Daimyo stayed. It was built in early 19th century.