Like geocaching?  See if you can find the seattlenantes1980 geocache. Seattle and Nantes have been sister cities since 1980. Both cities have turned former industrial sites into public parks with contemporary art, natural landscapes, and cultural events. Start in Seattle's Olympic Sculpture Park, with outdoor sculptures, native plants, a beach, and amazing views across Puget Sound to the Olympic Mountains, all on the site of a former oil and gas corporation.