Izumo Taisha Shrine Ema - one of Japan's most important Shinto shrines. There are no records of exactly when Izumo Taisha was built but it is often considered to be the oldest shrine in Japan. The main deity enshrined at Izumo Taisha is Okuninushi-no-Okami who was the creator of Japan and the ruler of Izumo. He also became known as the deity of good relationships and marriages. Every year, from the 10th to the 17th day of the 10th lunar month which ends up being in November eight million Shinto deities from across the land gather at Izumo Taisha for a their annual meeting, a kind of çonvention of the gods’.