Knarrarósviti Lighthouse
Built-in 1938-1939, the lighthouse was the first one in Iceland to be built out of reinforced concrete. For a long time, the lighthouse was the tallest building in South Iceland, 26,2 meters (86 feet) high. It was designed by the engineer Axel Sveinsson as a blend of functionalism and art nouveau (jugendstil). In summertime (mid of June to start August) the lighthouse is open every day.
Knarrarósviti lighthouse is part of the beautiful South Coast Lighthouse trail that you can find more information about here.