Dongshan River Ecoark, also known as Dongshan River Forest Park, is a park located in Yilan that focus on green tourism and environmental education. The park is opened in 2016, being planned and constructed for 20 years since 1997. Dongshan River Ecoark, along with the nearby Dongshan River Water Park and Wulaoken River Valley, is one of the primary venues for Yilan’s large-scale events such as the International Children's Folklore & Folkgames Festival and Green Expo. The nearby Luodong Night Market and Luodong Forestry Culture Garden are also highly recommended attractions.

Covered an area of about 16 hectares, Dongshan River Ecoark offers wide-open grassland and native plants. It’s an excellent habitat for migratory birds. Throughout the years, white egrets, moorhens, and black drongos have made their home here. There are winding natural trails and bike trails along the park, offering visitors a leisure place for strolling and cycling.