This rock museum was a collection from an Icelander named Petra. She has since passed, but her rock collection is amazing and remains accessible thanks to her children and grandchildren. I know how this stop sounds, and doesn't look like much either, but it's actually a super cool spot, especially to break up the road trip. More than anything, it's impressive that she found so many cool rocks in Iceland! If you think rocks are cool (which I personally do), you'll love this one!