Biyuan (“green garden”) is located on a mountain slope to the northwest of Wusha Village. This is a leisure park planted with acacia and pill-bearing spurge, adding to the green ambience and making this the most important plant ecology garden on Beigan. It also contains representative local plants such as the climbing ficus, sea lavender, and cluster amaryllis. Ferns are particularly abundant here. The park has simple paths, steps, small bridges, and rest facilities. It also has a monument to fallen soldiers, a solemn memorial erected in 1960. The Matsu National Scenic Area Administration has invested in the park’s renovation in recent years, giving it better facilities. The ground cover here is mostly planted, but natural substitution and the sprouting of seedlings from the underground seed depository have given Biyuan a unique, and uniquely rich, variety of plants. Surveys show that Beigan is home to 314 species of higher plants in 97 families, and Biyuan alone has 128 species in 61 families. Especially notable is a large colony of bear’s foot fern, a rare plant that can be found nowhere in Taiwan except on Beigan. Everywhere you turn in Biyuan, you are faced with verdant vegetation and are up close with green beauty.