SEOUL - Inside Seoul's Hangang park sits Korean architect Yong Ju Lee's latest project: Root Bench.

Intended to look like the roots of an enormous tree, the 100-foot long piece of furniture features dips and rises throughout - allowing park-goers to sit, lean, or lie wherever they wish.

Lee designed the bench using a computer algorithm, which generated its three-dimensional geometry. The algorithm used a mathematical model based on a reaction-diffusion system, which shows what happens when one or more chemicals are concentrated.
The structure is supported by a metal frame and features a top-laid wooden deck. Three different types of furniture comprise the structure: a children's chair, adult's chair, and table - all at different heights.

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