Hirugakojima Park (Nirayama)

Highlights

"Hirugakojima", where Minamoto no Yoritomo was exiled after his defeat in the Heiji Rebellion.
The park has a statue of Yoritomo and Hojo Masako called "The Couple of Hirugashima".
The "Hirugashima Chaya" rest house serves tea free of charge.

Address	静岡県伊豆の国市四日町17-1
Contact	Hirugashima Chaya 055-949-5582
Visiting	Open access (tea house 9:00–15:00, extended in some seasons)
Parking	Free, about 10 spaces
Access	About 10 min on foot from Nirayama Station on the Izuhakone Railway

Addresses are shown in Japanese so you can show them to taxi drivers or enter them into a map app.

Sources: 1・2