Wikipedia
Taisha-zukuri
is the oldest Shinto shrine style. Named after Izumo Taisha's honden (sanctuary), like Ise Grand Shrine's shinmei-zukuri style it features a bark roof decorated with poles called chigi and katsuogi, plus archaic features like gable-end pillars and a single central pillar (shin no mihashira). The honden's floor is raised above the ground through the use of stilts (see photo). Like the shinmei-zukuri and sumiyoshi-zukuri styles, it predates the arrival in Japan of Buddhism.