This temple is famous for its hydrangeas and is hidden deep in the mountains. The path from the entrance is really steep, so you'll need some stamina and strong legs to reach it.
The location is pretty remote and not easy to get to. If you want to walk over to the torii gate for photos, be extra careful—there's a lot of traffic on the road.
The whole place is filled with Edo period vibes. You can even dress up as a character from a period drama and walk around the park without feeling out of place. It really feels like you're the main character in a time-travel show!