Onward to Vietnam
I spent the last day and a half being guided around Angkor Wat. It's a huge city sized complex of Hindu and Buddhist temples near Siem Reap, Cambodia. Built between 1000ad and about 1300ad, they are impressive and compelling. I took about 450 pictures, but they don't convey the scale of it all - if possible, see it in person. While I saw a fair amount in my limited time, three or more days would be better. I highly recommend a guide and a small group, as it's too big and too complicated to do on your own, and too frustrating to do with a tour group, IMHO.
I'm excited to move on to Vietnam, where I have high hopes in terms of learning about and experiencing the cuisine.