If your trip to Gratkorn is all booked but your itinerary is a bit on the empty side, we can give you a helping hand.If your family and friends ask why you're heading here, just show them a few images of Austrian Open Air Museum and Eggenberg Palace. These noteworthy attractions will guarantee you have an awesome trip.Nothing beats exploring new things, and you can do that at Kesselfall Gorge. Sanctuary of Mary Strassengel is another fascinating detour.