Kanagawa: Head to Enoshima

Kanagawa is the nearest fun-filled prefecture to Tokyo. While Kanagawa is usually identified with Yokohama Bayside shopping and fun or the Big Buddha and beaches, Kanagawa also has Enoshima. 

A trip to Enoshima will bring you to the interesting Iwaya Caves, which face the sea and can lead you to the Enoshima Sea Candle, the Ryukoji Temple, and the Samuel Cocking Garden. 

To make your family trip cost-efficient, get an Enoshima Day Pass from Shinjuku Station.

https://allabout-japan.com/en/article/5264/?=jnto_20170519