of glacial retreat on the evolution of landforms and topography. The most Finnish parts of the High Coast/Kvarken Archipelago World Heritage Site are situated in the Korsholm municipality. In the group of islands in the “middle” of the Kvarken region, in Swedish called Valsörarna – Finnish Valassaaret, is a lighthouse designed by who worked for Gustave Eiffel's engineering bureau. The structural similarity between the lighthouse (built in 1885) and the Eiffel tower (built in 1889) is quite obvious. The lighthouse is now automated as are most lighthouses in Finland. Bridge There have been proposals for a bridge across the strait, at a cost of about 1.5 to 2 billion euros. There are islands in the strait, and the sum of the lengths of the probably three bridge parts would be about . The Swedish minister of finance has said it is an interesting idea, but the idea is still decades from being brought to fruition. There is a debate in the coastal cities on both sides, like Umeå and Vaasa. The official view from the Swedish and Finnish governments is that it is much too expensive, also put in regard that the cities are very small by European standards, as compared to Copenhagen and Malmö between the Oresund fixed link. The natural values of the area also make a bridge dubious. References External links High Coast/Kvarken Archipelago World Heritage Site's official website Kvarken World Heritage Site UNESCO World Heritage profile "The black islands rising from the sea", BBC Travel, 14 April 2017. Retrieved 20 April 2017. Straits of Finland Straits of Sweden World Heritage Sites in Finland Landmarks in Finland Finland–Sweden border International straits Landforms of Norrbotten County Landforms of Västerbotten County Landforms of Ostrobothnia (region)