Roman Catholic cathedral in Strasbourg, Alsace, France. Strasbourg Cathedral or the Cathedral of Our Lady of Strasbourg. It was the world's tallest building from 1647 to And construction took 4 centuries, it started from 1015 to 1439
The Minaret of Samarra is part of the Great Mosque of Samarra in Samarra, Iraq. The mosque is one of the largest in the world, and was built by the Abbasid caliph Al-Mutawakkil . The minaret was originally connected to the mosque by a bridge.