The Hall of Mirrors is a grand Baroque style gallery and one of the most emblematic rooms in the royal Palace of Versailles near Paris, France. The grandiose ensemble of the hall and its adjoining salons was intended to illustrate the power of the absolutist monarch Louis XIV. Located on the first floor of the palace's central body, it faces west towards the Palace Gardens. The Hall of Mirrors has been the scene of events of great historic significance, including the Proclamation of the German Empire and the signing of the Treaty of Versailles.

Baroque architecture is a highly decorative and theatrical style which appeared in Italy in the early 17th century and gradually spread across Europe. It was originally introduced by the Catholic Church, particularly by the Jesuits, as a means to combat the Reformation and the Protestant church with a new architecture that inspired surprise and awe. It reached its peak in the High Baroque (1625–1675), when it was used in churches and palaces in Italy, Spain, Portugal, France, Bavaria and Austria. In the Late Baroque period (1675–1750), it reached as far as Russia, the Ottoman Empire and the Spanish and Portuguese colonies in Latin America. In about 1730, an even more elaborately decorative variant called Rococo appeared and flourished in Central Europe.