Look at the ancient structures found throughout the world. The only one I know of in non-Mediterranian Europe is Stonehenge which, while impressive, is some stones hauled over a great distance and placed is an astronomically significant manner. Then you have pyramids and ziggurats in just about every other region except Northern Europe, North America, Australia, and Antarctica, ancient cities on every continent except Northern Europe, Australia, and Antarctica, Polynesians developing a means of marine navigation that is effective across the southern hemisphere (the Norse had a system that was effective in the North Atlantic), Australia having an oral history that has evidence of recording events that go back at least 10000 years (while surviving in some of the most inhospitable terrain on the planet). When you look at it, significant achievements in ancient Northern Europe were pretty sparse. We do seem to have caught up in the modern era, though.