Rent a car and go to the Alaska Native Heritage Center http://www.alaskanative.net and the Alaska Zoo http://www.alaskazoo.org. For a good meal in the downtown Archorage area, stop in at Orso http://www.orsoalaska.com and have some of their fabulous smoked salmon chowder." With only 6 hours on the ground, I wouldn't venture out of the city.