If culture and crowds are your kind of scene, venture out to the Meier Lang Nacht der Museen, or Long Night of Museums, in Germany’s Rhine-Neckar metropolitan region on Saturday.More than 100 museums, studios, galleries and cultural organizations will stay open up to 2 a.m. Sunday, enticing visitors with their latest exhibits and one-time-only happenings. Ride an old-time tram through the streets of Mannheim, learn how the Celtic culture once thrived in the area at the Kurpfälzisches Museum in Heidelberg, or see how art fuses with rock music at the “Artists for Freedom” installation in Ludwigshafen.One of the more intriguing events includes the opening to the public of Turley Barracks in Mannheim, vacated by the U.S. Army in 2007. An audio-video installation and photo exhibition will re-create the atmosphere of the barracks, and people who once lived and worked there will serve as guides. Disc jockeys will spin old hits, and grilled burgers and ribs will help evoke the proper nostalgic mood. Tickets for entry to venues in all three cities cost 14 euros in advance or 18 euros on the evening of the event. The ticket lets each adult bring one child age 6-16 for free. The charge to bring additional children is 5 euros in advance or 7 euros the evening of the event, except for children under 6, who get in free.Buying tickets in advance offers a huge advantage — free use of local public transportation on the Verkehrsverbund Rhein-Neckar, or VRN network, throughout the evening. See where to buy tickets at http://langenacht.meier-online.de/pages/tickets or buy them at the counter or from an automated machine at the train station. Additional trains and buses will be running to ensure that you make your way home that night — eventually.