Prehistoric times when the earth was populated by dinosaurs is an era, which appeals to both children and adults. Educational treasure hunts and games at the Green Gate will teach the young ones about this fascinating period of time. Once you've seen the films, life-sized skeletons of one of the largest Dutch sperm whales ever found and Lucy, one of the oldest humans ever found, make sure to visit the museum shop. It sells anything even remotely related to prehistory from fossils to colourful minerals.