Built in 1776 by fur trader Joseph Roi, one of the first seven settlers of La Baye (Green Bay), this wattled house is the oldest standing house in Wisconsin. In 1805 it was sold to Jacques Porlier, another French-Canadian fur trader, who was appointed Captain of the Militia by the British Government during the War of 1812, when his home became the center of military arrangements. In 1850 Niels Otto Tank, a wealthy Norwegian missionary, obtained the house when he purchased several hundred acres of land in hopes of establishing a Moravian colony for Norwegian immigrants. After Tank died in 1864, his wife lived in the cottage until her death in 1891, devoting her life and fortune to missionary work. In 1908 the house was moved from its original site on the Fox River to Tank Park, which Mme. Tank had presented to the city in 1880 in memory of her husband. The house is furnished mostly with authentic Tank pieces, many dating back centuries to Mme. Tank's famous Dutch ancestors.