59°55′18″N 11°09′07″E / 59.92167°N 11.15194°E
The Fetsund Booms (Norwegian: Fetsund Lenser) are a Norwegian national cultural heritage monument, log driving museum,[1] and wetland center at the outlet of the Glomma River into Lake Øyeren in Lillestrøm municipality in Akershus county. The Fetsund Booms were set up as a timber sorting facility in 1861 and operated until 1985, when log driving came to an end on the Glomma River.[2][3] Today the facility is part of the Akershus Museum.
The millennium site for the former municipality of Fet is located next to the Vinkelen building at the facility. It is a flood marker in the form of a stone about 7 meters (23 ft) high with markings to record the highest flood levels on the Glomma River.[4]