Inside, visitors crowd one another to pose in front of a 15-foot tall model of the Pyongyang monument, Juche Tower. Juche is the ideological principle developed by DPRK founding father, Kim Il-Sung. There's also a miniature bridge over a reproduction of Taedong River, a Korean-style pavilion, and several TV monitors showing footage from the Korean War, national parade excerpts, ordinary life, athletic events, and scientific achievements.Associated video here. Note how the poor DPRK citizen tasked with stamping the "passports" of expo visitors doesn't want to be caught on camera.
Official website of the DPRK pavilion here.