In a bus interchange, there will be rows of stone seats like these. I guess it's becos of the height of these seats that makes them really comfortable even for a short moment. Cos u know why? As by the time you've done with lots (or some) of window shopping at a mall nearby, you'll find these stone seats really comfy to rest your legs and feet:). Somehow in Singapore, there's bound to be a shopping mall somewhere when a bus interchange is found.