The rainwater tub is used to collect rainwater for fire prevention. On an octagonal stone platform, there is a square stone pedestal resembling a lotus valve, on which is placed a circular rainwater tub.
Yanagimori Shrine
2-15-1 Kandasudacho, Chiyoda-ku, Tokyo 101-0041
![](https://pbs.twimg.com/media/E5BTrS9UYAAAgtq?format=jpg&name=large)