Concrete, an almost non-stop disco club for the non-stop partier, started as a daytime party on Sundays and has expanded to an every-other-weekend phenomenon. Friday goes from 7 p.m. to 4 a.m. Saturday starts at 7 p.m. but doesn't finish until 2 a.m. Monday. Centered on a houseboat docked on the Seine near Gare de Lyon, Concrete pumps out electronic music with no neighbors to mind. Its chic crowd has been described as "shirtless bodybuilder torsos, cougars, pretty mannequins, hipsters and their panoply." Check the website for schedule.

concreteparis.fr