What is the fine-grained topic of the following text: Saint-Dié-des-Vosges is home to a little-known historical heritage: a Celtic camp dating back over 4 000 years, a unique factory by Le Corbusier, a cathedral rebuilt exactly as it was before its destruction in 1944, and an extraordinary tower, the Tour de la Liberté, in the shape of a spacecraft. Only return the topic.
Historical heritage of Saint-Dié-des-Vosges