It’s possible to get an overload of temples in Kyoto. And with beautiful sites easily accessible, the imperial gardens of Shugakuin and Katsura Villa may be overlooked by non-Japanese tourists. Certainly if you have a shortage of time, you may not want to allocate two hours to the imperial sites. However, I certainly think they are worth a visit - the landscaping is remarkable. These were residences after all, of Japan’s former royal families.
Between the two, Shugakuin is...