Yūsai-tei (祐斎亭) is a workshop and exhibition space in Arashiyama, displaying pieces by the master dyer 'Yūsai' (祐斎).

Yūsai-san is a leading figure in 'yume kōro-zome' (夢こうろ染), a process of dyeing that creates a pattern capable of changing colour in the sun.