This building crowned by a dome was started in 1758 based on plans by Soufflot to replace the church of Sainte-Geneviève. No sooner was it completed than the Revolution turned it into a pantheon for the ashes of some of France's greatest citizens (crypt). Twice returned to Catholic worship, the monument was deconsecrated in 1885 to receive the body of Victor Hugo. The interior, in the shape of a Greek cross, is decorated with murals, including the life of St Geneviève by Puvis de Chavannes.