Østfold is a county in Eastern Norway, which from 1 January 2020 to 31 December 2023 was part of Viken. Østfold borders Akershus and southwestern Sweden, while Buskerud and Vestfold are on the other side of Oslofjord. The county's administrative... Wikipedia
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Østfold | Historical cities, Hvaler islands, exhibitions - Visit Norway
www.visitnorway.com › ostfold
Østfold between Oslo and the Swedish border is full of cultural and historic cities, art events, and idyllic seaside experiences.