The Florentine Tower of Buire (French: Tour Florentine de Buire), located in the commune of Buire in the Aisne department in Picardy in northern France, is a former 45.76 meter tallsignal box. Since November 6, 1995, it has been classified as a monument historique (National Heritage Site of France). It is the work of French architect Gustave Umbdenstock and the engineer Raoul Dautry employed by the Compagnie des chemins de fer du Nord. The decision to build the tower was made following the development of the railway station of Hirson, which, due to the development of the local mining and metallurgical industry, became the second most important French rail junction (after Paris) in the early twentieth century.