After Singapore, we visited Vietnam. Ho Chi Minh City (Saigon) > Hanoi > Dong Hoi > Buon Ma Thuot. When I first arrived, the culture shock was real (although it could have also been the fact I was very much disoriented from the sleep deprivation, not having any idea what time it was, not knowing where I was, and not being able to understand anyone or having them understand me).
The first thing I noticed was just how different traffic is in Vietnam. Technically there are traffic laws, but more like traffic suggestions and horns/blinkers are used for different purposes. The major cities Ho Chi Minh and Hanoi and very busy cities an chaotic.
Visiting smaller cities was certainly more calm though being a giant 6′ 4″ tall albino did get me a ton of curious looks from the natives. At one point I had a group of older Vietnamese women surround me and begin taking photos with me… That aside, Vietnam’s countryside is absolutely one of the most beautiful places I’ve visited.