Sanpō-in is a splendid garden within Daigo-ji temple. Best known for the large cherry trees in its entrance area, most Japanese have heard the phrase “Hanami in Daigo”: Toyotomi Hideyoshi (1537–1598) has enjoyed cherry blossom viewing parties here back in the days.
The main garden itself is a huge wet-landscape style garden. Back in 2015, photography was still prohibited within the garden, but recently, not only has photography been allowed since at least 2017, but deeper areas of Sanpō-in — the main hall, several back gardens — have also been regularly opening to the public. I was fortunate to visit these areas both for maple foliage and snow so far. These days, visiting Sanpō-in is included in the entrance fee for Daigo-ji (even though a special fee for the back area may be necessary), so there is no reason not to enter.

Admission: open year-round, special opening of back areas from time to time.