The following outline is provided as an overview of and topical guide to Monaco: Monaco – small sovereign city-state located in Western Europe. Monaco lies on the northern coast of the Mediterranean and is surrounded by France. It has the highest life expectancy at birth of any country, 89.4 years (2017 estimate). Monaco is often regarded as a tax haven, and many of its inhabitants are wealthy and from foreign countries (including France), although they are not a majority.