 This similarity was most evident before World War II, when Duluth had a network of streetcars and an inclined railroad, the 7th Avenue West Incline Railway, that, like San Francisco's cable cars, climbed a steep hill.The change in elevation is illustrated by Duluth's two airports.The weather station at Sky Harbor Airport on Park Point has an elevation of , while Duluth International Airport, atop the hill, is higher at .