What to do in Berlin with kids on a rainy day? The Museum für Naturkunde (aka Berlin Natural History Museum) is the best place to be. Start your day with delicious coffee and freshly baked croissants at Röststätte Berlin then venture over to the museum. At the Berlin Natural History Museum, you’ll find plenty of dinosaurs, including a T-Rex named Tristan. It’s the perfect itinerary for dinosaur-loving children of all ages.