Perret is a district located in the city of Le Havre, in the Seine-Maritime department of Normandy, France. It is known for its unique architectural style, which was designed by the renowned French architect Auguste Perret. The district of Perret is characterized by its modernist and functionalist buildings, which were constructed using reinforced concrete and feature clean lines and geometric shapes. The architecture of Perret is considered to be a prime example of the post-war reconstruction period in France and has been designated as a UNESCO World Heritage site.