The earliest non-native settlement to the area came with the establishment of fur trading posts by companies based in eastern Canada. French missionaries and religious orders such as the Soeurs Grises de Montréal established many of the earliest hospitals, schools, and churches in the area. The discovery of gold in the Yukon in the late 1800s lead to what was to be the first of many building booms experienced by the province. With the discovery of oil in the Turner Valley in the mid-1900s another period of economic prosperity growth was underway. The architecture of the province reflects the boom periods experienced by the area.