South along the Oslofjord is the town of Moss (pop. 25,000), on the Mossesund, which separates the island of Jeløy (Alby manor house, with the F 15 Gallery) from the mainland (bridge). Archeological finds indicate that the area was settled as far back as 7000 years ago. It was prominent during the Iron Age, Viking Age as as well a major port,
which still holds true today. The treaty of union between Norway and Sweden was signed at Moss in 1814. Car ferry (45 minutes) to Horten, on the west side of the Oslofjord. To the south, on the shores of the fjord is the seaside resort of Larkollen.