Le Défi des bâtisseurs, la cathédrale de Strasbourg

The Strasbourg cathedral is a stunning edifice, a masterwork of gothic architecture which also expresses the bold ambitions of its creators. With its church spire which rose to a height of 142 meters it became the world’s tallest building and it held that distinction until the 19th century. Who were the master builders of the cathedral? What is the cathedral’s history?