Citadium is 2 shops in Paris, 2 shops in the South and 1 shop in Bordeaux! Citadium Caumartin: 6000 m² concept store located in the heart of Paris and dedicated to urban cultures with more than 250 brands. Open Monday to Saturday from 10 a.m. to 8 p.m. and late on Thursday until 9 p.m. Address & contact: 50-56 Rue Caumartin Paris 9 – 0155317414. List of brands and shop news: