Rain chains are a kind of decorative downspout for a gutter system. Rain water pours out of the gutter and onto a series of rings or cups. These help to channel the water down to the ground where it is either stored in a rain barrel or simply diverted away from the building. A set of rain chains can add a lot your house in both appearance and sound.
Note: Rain chains are not as efficient as an enclosed downspout and cannot handle high volumes of water. In heavy rains, much of the water will splash out of the cups and onto anything nearby.
Here is a video walkthrough of the project