Monaco is a sovereign city-state and microstate, located on the French Riviera in Western Europe. France borders the country on three sides while the other side borders the Mediterranean Sea. Monaco has an area of 2.02 km2 and a population of about 37,800; it is the second smallest and the most densely populated country in the world. Monaco has a land border of 4.4 km, a coastline of 4.1 km, and a width that varies between 1,700 and 349m. The highest point in the country is a narrow pathway named Chemin des Révoires on the slopes of Mont Agel, in the Les Révoires Ward, which is 161 metres above sea level. Monaco's most populous Quartier is Monte Carlo and the most populous Ward is Larvotto/Bas Moulins. Through land reclamation, Monaco's land mass has expanded by twenty percent. Monaco is known as a playground for the rich and famous, due to its tax laws. In 2014, it was noted about 30% of the population was made up of millionaires, more than in Zürich or Geneva.