The Northeast Passage was supposed to be a shortcut to Asia from Europe through an open waterway in North America. Many tried to find the route. They failed. Because we have a mountain range running from the northernmost part of North America to the Isthmus of Darien where, perhaps desperate for the route, we dug the Panama Canal.
Climate change, however, is shrinking the Arctic ice cap and making the northern shores of Canada, Russia, the US and a few others navigable. True, the best times for travel are in summer. True, there are still icebergs the further from the coast you go. But you can now travel the Northeast Passage, sailing north from Japan, skirting the Russian coast and then down the North Sea into the commercial ports of northern Europe.