White horses attend the Shinkyu except a rainy and snowy day. They stay the Shinkyu from 10am to 2pm. Color of the sacred horse has to be white, and two white horses are kept today. Also, these horses attend Samurai-style 1,000-person procession together with.

There is no painting on the Shinkyu. Sculptures of Sansaru "Three Monkeys" are put on the crossbar of the Shinkyu. The Sansaru consists of 8 panels like a picture book. Monkey has been treated as a guardian of horse since early times. Therefore, there was a custom to keep monkey in the stable until Muromachi period.