Lahti Poster Triennial Is an International Poster Exhibition In Finland. It is organized by Lahti Art Museum’s Poster Museum, Grafia – Association of Visual Communication Designers in Finland and The Poster Friends’ Guild. The Triennial is one of the most important and prestigious of all the poster events. It is the second oldest of all the permanent Poster Exhibitions in the world. Both, the Exhibition and Poster Museum were established in 1975. The aim of the Museum is to collect, deposit and study poster art and graphic design. The collections are augmented mainly through donations but also through purchases and deposits. The collections contain approximately 80 000 posters.