Østfold is a county located in the southeastern part of Norway. It is bordered by Sweden to the east and the Oslofjord to the west. The capital of Østfold is Sarpsborg, known for its rich history and beautiful parks. The region is characterized by its picturesque landscapes, including forests, rivers, and coastal areas. The economy of Østfold is diverse, with industries such as manufacturing, agriculture, and tourism playing significant roles. The county is also home to several historical sites, including the Borgarsyssel Museum and the ancient Viking burial mounds, which attract visitors interested in Norwegian history and culture.