Goutou — decorative round ornament made of glazed earthenware that is used to conceal the ends of glazed Chinese roof tiles. It is a traditional architectural element commonly found in Chinese roof structures. The purpose of the goutou is both functional and aesthetic.

Functionally, goutou serves to protect the exposed ends of roof tiles from weathering and moisture penetration. By covering the tile ends, it helps to prevent water damage, erosion, and potential weakening of the roof structure. Additionally, the rounded shape of goutou helps to deflect wind and rain, enhancing the overall durability and longevity of the roof.

Aesthetically, goutou adds a decorative element to the roofline. It is often crafted with intricate designs, patterns, and motifs, showcasing the artistic craftsmanship of Chinese artisans. The glaze applied to the earthenware gives the goutou a glossy and vibrant appearance, enhancing its visual appeal. Goutou ornaments can vary in size, shape, and colour, allowing for creative expression and customization in roof design.

The goutou is typically placed at the ridge and eave ends of the roof, creating a harmonious and elegant finishing touch.