Jacques Hardouin-Mansart was a prominent French architect born in 1646, known for his significant contributions to the Baroque style of architecture. He is best recognized for his work on the Palace of Versailles, where he designed the famous Hall of Mirrors and expanded the palace's grandeur. His designs emphasized symmetry, grandeur, and elaborate ornamentation, which were hallmarks of the Baroque period. In addition to the Palace of Versailles, Hardouin-Mansart also worked on various other important structures, including the Les Invalides in Paris. He was appointed the chief architect of the King of France, which solidified his influence in shaping French architecture during the late 17th century. He passed away in 1708, leaving a lasting legacy in the field.