The Sonian Forest, also known as Forêt de Soignes, is a large, ancient forest located near Brussels, Belgium. Spanning approximately 4,400 hectares, it is a mix of beech, oak, and conifer trees, providing a rich habitat for various wildlife species. The forest is a popular destination for outdoor activities such as hiking, cycling, and horseback riding. Designated as a UNESCO World Heritage Site, the Sonian Forest is recognized for its ecological significance and historical importance. It has been a vital green space for the surrounding urban areas, contributing to biodiversity and offering recreational opportunities for residents and visitors alike.