CANNABIS EXPO & BEACH FESTIVAL Mary Jane Berlin, Germany’s leading Cannabis expo since 2016. Mary Jane Berlin is not only an expo, but also a festival with large live acts. In combination with our exhibitors, food stands, live concerts and conference on therapeutic properties, an extensive cultural and entertainment program is offered. As a visitor of Mary Jane Berlin, we inform you about the variety of THE green power plant – as food, cosmetic, building material, medicine and much more! As the world’s biggest Cannabis Expo, the Mary Jane Berlin offers a beach area with pool for the hot days of the Expo!