The way rain chains work is really quite simple. Most homes today have rain gutters, and at the end of the gutter is a downspout. Rainwater that hits a roof flows into gutters, which then channel water to downspouts. The rainwater falls through downspouts toward the ground where it's usually channeled away from a building. Rain Chains replace the downspout and guide rain water down the chains which is a beautifully innovative way of managing rainwater runoff. Rain chains can be found in a wide variety of styles and themes.