History buffs will appreciate this "museum" and there is so much to see. Thoroughly enjoyed everything it had to offer. You could spend a whole day there but spend at least 2-3 hours walking around the museum, looking at the ships and submarines, looking at historical artifacts, photos, military vehicles, uniforms, etc. I found it very fascinating and well worth the time. There is also a small restaurant/bar in the museum with a beautiful view of the lake. Highly recommended! Kids of all ages will love it here!