Rain chains also known as "kusari doi" after their Japanese name, originated in Japan and are alternatives to the downspout component in a traditional rain gutter system. Their purpose is both decorative and functional - to make a water feature from the transportation of rainwater cascading downwards into a drain or to a storage container. (Rainwater, collected for household usage has now been given the new name - Water Harvesting.)

Rain chains are typically either a series of metal cups, linked together with a hole in the bottom of each, or chain links that span vertically.

Rain chains originated in Japan hundreds of years ago. They work exactly like American downspouts, but in a way that evokes pleasure and delight. What makes rain chains so unique is that the water falling from the roof is actually seen instead of being contained and drained away. Rain swirls and flows down, creating a mesmerizing sense of motion and tranquility right outside your window. The rain chain works by breaking the fall of rainwater, which adheres to the chain due to surface tension. It is a perfect way to divert the water off your roof either into a rain garden or rain barrel. The beautiful, pure copper rain chain adds an architectural accent to your home exterior. Over time the copper develops a rich blue-patina, creating an attractive "antique look".