Jean de la Vallée was a notable French architect and engineer active during the 17th century. He is best known for his work in the Baroque style, which emphasized grandeur and elaborate details. His contributions significantly influenced the architectural landscape of Sweden, where he moved and worked on various projects. One of his most famous works is the design of the Royal Palace in Stockholm, which showcases his skill in blending functionality with artistic expression. De la Vallée's legacy continues to be recognized in the field of architecture, particularly for his role in shaping the architectural identity of Sweden.