Lillestrøm → Fetsund → Mysen → Rakkestad → Fredrikstad

Fetsund Lenser, Norway's only preserved timber-sorting station, at the gateway to Nordre Øyeren, Northern Europe's largest inland delta and a bird wetland.

Høytorp, a 1910s fort with a museum on the ridge above Mysen, the 1200s stone church nicknamed 'the Østfold cathedral' at Eidsberg, and the Folkenborg open-air museum.

Historica's quirky collection of chainsaws, minerals and old trades, canoes on the Rakkestad river, and the fire-tower view from Linnekleppen.

The thundering Sarpsfossen falls, Borgarsyssel Museum on the spot where Olav Haraldsson founded Borg in 1016, and Bronze Age carvings at Hornes.

Gamlebyen, the Nordic region's best-preserved fortress town, Bronze Age rock carvings along the Oldtidsveien, and part of Ytre Hvaler marine national park.