The harness on this little horse caught my eye. It's covered with intricate metal decoration, and seems to have an unusual way of attaching to the cart, though I can't see it clearly in this photo, which is from Ikhlasul Amal's photostream on flickr.
These traditional horse drawn carts are called "dokar" and are found in Bali, Indonesia. They have an interesting history. This article (on a rather oddly named blog) describes the Hindu and Dutch influences on the development of this style of horse cart, their use in ancient warfare, and other fascinating details. It has several nice pictures, too.