Sai shrine (狭井神社) is one of the oldest shrine located in Nara. It was established in the time of the 11th emperor Suinin. It is the entrance of Mt. Miwa that is the sacred mountain of Omiwa Shrine.
Visitor's Info.
There are parking and restroom.
Don't take any photo and video of the sacred mountain.
Do drink, no food.
Access
0. at Nara Station.
1. use JR Sakurai Line to Miwa Station.
2. walk east.
20 min
New Wave Samurai Movie. 
映画好き集まれ！ 
Enshrines: Aramitama
Established in the time of 11th emperor Suinin.
Sai Shrine is one of the brunch shrine of Omiwa Shrine. It is also the entrance of the sacred mountain, Mt. Miwa.
Matsuri
April 18: Hanashizumemno Matsuri, or Medicine Matsuri.
To enter the mounain.
Ask at the shrine and keep the manner and the rule.