Peter Andreas Blix was a Norwegian architect and engineer best known for designing railway stations and villas in Swiss chalet style. He was also occupied with the conservation of Norwegian stave churches and the construction of canals in 19th century Norway.

The Østfold Line is a 170-kilometer (110 mi) railway line which runs from Oslo through the western parts of Follo and Østfold to Kornsjø in Norway. It continues through Sweden as the Norway/Vänern Line. The northern half is double track and the entire line is electrified. It serves a combination of commuter, regional and freight trains and is the main rail corridor in the south of Norway. The Follo Line runs parallel to the Østfold Line in tunnel. The Eastern Østfold Line branches off at Ski Station and runs 79 kilometers (49 mi) before rejoining at Sarpsborg Station.