There are formal French and Italian gardens, but I have a special fondness for the Japanese garden, with its paths, waterfalls, and statuary.
I actually prefer the Japanese bridge in fall or winter, since the contrast of red and green is very strong. When there are autumn leaves the bridge integrates into the scene more pleasantly, I think. Still, it's fun to stand on the bridge and watch the fish and turtles swim under.
There is statuary everywhere. This lady stand in an herb garden.
A carved head, rescued from a demolished building, peeks out behind flowers, adding a little delight to a stone wall.
There are lots of benches in the gardens, inviting the visitor to sit and enjoy the colors of the season. Most feature quotes, and I jotted down this one, which applies to all sorts of artistic endeavors:
Nobody is bored when he is trying to make something that is beautiful or to discover something that is true.