Ishigakiyama Castle

Ishigakiyama Castle stands as one of Hakone's most compelling historical landmarks, drawing visitors with its atmospheric stone foundations and sweeping views across the Kanagawa landscape. Rated 4.2 stars across more than 1,300 reviews, it has earned genuine affection from those who make the climb: a quiet testament to a past that still feels present in the weathered walls and forested surrounds.

When to go

The site is open around the clock every day of the week, which makes early-morning and late-evening visits especially rewarding. Arriving at dawn or dusk offers softer light and a more contemplative atmosphere. Spring and autumn tend to frame the ruins beautifully, with blossom or foliage adding colour to the stone.

“This is a place in Odawara where a castle used to be. The biggest benefit to come here is the views you can get of Odawara. It's a nice and peaceful place to chill out as well.”— John “Arc” Arcarola, Google review