The early history of Monaco is primarily concerned with the protective and strategic value of the Rock of Monaco, the area's chief geological landmark, which served first as a shelter for ancient peoples and later as a fortress. Part of Liguria's history since the fall of the Roman Empire, from the 14th to the early 15th century the area was contested for primarily political reasons. Since that point, excepting a brief period of French occupation, it has remained steadily under the control of the House of Grimaldi.[1]