If only the mighty walls of Oberhofen Castle could talk! But as they can't, inquire if tours are available to hear a couple of its tales instead.
When you've spent some time at this fortified complex in Oberhofen am Thunersee, why not make your way to Schloss Schadau, Lake Thun, and Spiez Castle? They're near Oberhofen Castle and also a hit with tourists.