Built for exactly this hour: when the moon comes up over the Lake of Reflected Fragrance and paper lanterns begin glowing from the bridges, you stop being a visitor walking a path and become a figure inside a painting you have seen a hundred times and never once stood in.
Three evenings only, beginning at twilight. Lantern light on the koi ponds, performances carrying across the water, mooncakes handed to people tasting them for the first time beside people who grew up on them. The pavilions were built by Chinese artisans who understood that the finest architecture is the kind that makes you forget which country you are standing in. Families across the San Gabriel Valley treat this as an annual appointment, and the tickets move accordingly.
Late September in San Marino, in the evening, with details at huntington.org. Go with the person you would want beside you when the lanterns come on.