When someone mentions a waterfall countertop, they're not talking about flowing water or the waterfall-style faucets installed in many modern kitchens. This type of countertop is actually a bold, sleek design feature in which the surface doesn't stop at the edge, but cascades like a waterfall straight down the sides to meet the floor. This creates a seamless, sculptural look that's artsy but expensive. Although some versions may cost around $200, the price can easily exceed $1,200.