Higashinuma Shrine
A shrine with roots in Mt. Fuji worship, it features a small replica of Japan's tallest mountain within the grounds. It can even be climbed, so feel free to give it a try.
Address
2-15-45 Sashima, Kawaguchi, Saitama Prefecture <Google Map>
Access
Route 05: Sashima Loop
Roughly 10 minutes from Higashi-Kawaguchi Station, South Exit (Bus Stop #1)
One minute on foot from Sashima 2 Chome Bus Stop