If you have Norwegian roots, May 17 is a day to celebrate. It was on this day in 1814 that the Constitution of Norway was signed, declaring Norway an independent kingdom. This historic neighborhood in Trondheim, Norway, would be an ideal place to celebrate. Trondheim is the Norway’s third-largest city, founded by Viking king Olaf Tryggvason in 997. Today, its colorful wharfs and waterways charm visitors from around the world.