@izzythepush,
No, I haven't been there, though relatively near to it. An architect friend had been, though, and showed me lots of photos. I'm sure I'd enjoy it. I was busy being crazed on a cold and windy day about Villa Lante, also in Viterbo area, at Bagnaia. We were the only ones there, and the guide directed us into one of the villas so we could all get out of the wind for a while. Strong memories of that place, also of the stop at village restaurant afterwards, and then a stop in a bar to get a bus ticket and the guys in the bar reaching in their pockets to come up with two tickets as the ticket counter was closed.
Edit to add, my husband offered to buy the group a round and they said, no, no.. When we were in the bus leaving Bagnaia, I saw one of the guys hod carrying across the square.
On chinese gardens, I once heard a well regarded chinese garden expert's quite long lecture with photos (forget her name) but that is now vaporous in my brain. Remember liking the lecture. In the firm I worked in longest, the owner (still pals) was (well, still is) early generation japanese american, raised near a bracero gardening family, so he became a typically californian mixed cultural person (fluent in spanish while young) and had a masters in planning and so on. Anyway, a lot of our clients were chinese, some paid attention to fung shui and some didn't, and a lot were other than chinese.. We listened to what they wanted their gardens to be like. Another long time mentor still friend was born of 'good family' in japan, and asked me to be his land arch for a japanese garden in a larger botanical garden, but the donor for the work nixed me out of it for his own person. I would have worked fine with the main designer since we understood each other, but also learned more details by leaps and bounds.
So, as we all know, there are some gorgeous gardens out there. I like 'untouched' land too, lest I sound like I don't.