CUD is a night bar in Le Marais that has been open since 2001, built for people who come out after midnight. It has three bars across two floors, with a stone cellar and alcoves downstairs, and stays open until the small hours every night of the week.
Entry is free with one drink required at the door, no ticket, no guestlist and no dress code. DJs play through the night, and the crowd runs from a casual after-work stop to a busy Marais overflow on weekends.
It calls itself a hideout for those who live the night, and its own account describes the cellar as a place for atmosphere and encounters as much as drinking.