The Palace of Versailles was the principal royal residence of France from 1682, under Louis XIV, until the start of the French Revolution in 1789, under Louis XVI. It is located in the department of Yvelines, France, about 12 miles southwest of the center of Paris. The palace has been a site of historical importance. The Peace of Paris (1783) was signed at Versailles, the Proclamation of the German Empire occurred in the vaunted Hall of Mirrors, and World War I was ended in the palace with the Treaty of Versailles, among many other events. The palace is now a historical monument and UNESCO World Heritage site, notable especially for the ceremonial Hall of Mirrors, the jewel-like Royal Opera, and the royal apartments.