Located in the 7th district of Paris . Is a complex building containing museum , monument, a hospital and a retirement home for war veterans (Invalides) . Inaugurated in 1678, inside the museum you will find nearly every weapon and instrument of war imaginable in this comprehensive collection of military equipment . The body of Emperor Napoleon I was placed there on 2 April 1861, Nowadays, alongside Napoleon I's tomb, the Dome contains the graves of his son, l'Aiglon, the King of Rome, his brothers Joseph and Jérôme Bonaparte. The building retained its primary function of a retirement home and hospital for military veterans until the early 20th century... Open from 10:00-17:00 . Tickets adults 9,50€, +18 yrs old 7,50€ . Free for all under 18 yrs old for the museum only .