The History of Rain Chains
How Rain Chains Began: Tea Houses and Hemp-Palm Ropes
In Japan, rain chains are called kusari-toi. The word means "chain rain-gutter"—a simple name for a simple idea. Instead of hiding water inside a closed downspout, a rain chain lets you see and hear the water as it flows from your roof to the ground.
Most homes use a sealed pipe. The water disappears. A rain chain does the opposite. It turns rainwater into something you can enjoy.
This is the philosophy behind every Seo Rain Chain.
For hundreds of years, shrines, temples, and traditional homes across Japan have used rain chains. They reflect a deep cultural idea: each season brings its own beauty, and rain is part of that beauty.
The first rain chains appeared in the late 1500s. Tea masters in Japan were building small tea houses called Sukiya. Sukiya means "refined house." These were quiet, simple spaces made from natural materials—wood, bamboo, and stone.
The tea masters valued simplicity over decoration. They believed humble, natural things held more beauty than grand, formal ones. This idea shaped how they handled rain, too.
The very first rain chains were not metal at all. They were ropes. Craftsmen wove fibers from the hemp-palm tree into a strong cord called shuro-nawa. They hung this rope from the edge of the roof, and rainwater trickled down it to the ground. It was simple, natural, and beautiful—the first kusari-toi.
You can still see a shuro-nawa rain chain today. It hangs at the Edo-Tokyo Open Air Architectural Museum, beside the entrance of the historic Mitsui family home.
Over the centuries, metalworking advanced, and rain chains changed with it. Craftsmen replaced hemp-palm rope with linked metal chains. Later, they shaped copper into small cups that caught and guided water more smoothly. Each new form kept the same purpose: to make rain visible and beautiful.
About fifty years ago, rain chains began to appear on everyday homes in Japan—not just on temples and shrines. For a while, the shift toward Western-style houses pushed rain chains aside. But in recent years, architects have brought them back. Some use rain chains on modern commercial buildings as design features. Others blend traditional Japanese craft with clean, contemporary lines. Rain chains are finding new life in new places.
At Seo Metalworks Co., we've spent nearly a century as part of this long story—quietly refining what a rain chain can be. Here's how we carry the tradition forward today.
Carrying the Tradition Forward in Takaoka
Our workshop is in Takaoka, a city in Toyama Prefecture with over 400 years of metalworking heritage. Generations of craftsmen here have shaped copper and bronze for shrines, temples, and everyday life—and that same expertise lives in every rain chain we make.
Since 1938, we've pressed each cup with our own dies, polished each surface by skilled hands, and treated each material according to what it asks for. Copper is usually left to develop its patina naturally over time; other finishes are chosen with equal care.
Learn more about our craftsmanship
Three Forms, One Philosophy
Rain chains have taken many shapes over the centuries, and at Seo Rain Chain we offer three: Link, Cup, and Tube. Each handles water differently, and each fits a different kind of space.
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Link Type — The simplest form, where water travels down through open links. Quiet, minimal, and easy to pair with almost any exterior.
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Cup Type — A series of small cups that catch and release water. The most classic form, rich in rhythm and visual texture. Our copper rain chains in this form are especially beloved for the way they develop patina over time.
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Tube Type — Our contemporary design, where water is gently guided into a single, continuous line.
Whichever form you choose, the philosophy is the same: to let rain be seen, heard, and enjoyed.
A Modern Evolution: The Tube Type
Of the three forms, the Tube Type is the one we've refined the most in recent years.
Instead of letting water jump from cup to cup, the Tube Type gently receives and guides it—so the water falls in a single, quiet line, like a thread drawn from the sky. The flow doesn't scatter. It doesn't splash. It simply descends, clear and composed.
It's a contemporary expression of the same idea that began five centuries ago at a tea house: that rain, when treated with care, becomes something worth watching.
Bring This Tradition Home
Every Seo Rain Chain carries the quiet intention of those first kusari-toi—to let rain be seen, heard, and enjoyed. Handcrafted in Takaoka, Japan, each piece is made to turn rainy days into something you look forward to.
