Strasbourg Cathedral or the Cathedral of Our Lady of Strasbourg (, or "Cathédrale de Strasbourg", or "Straßburger Münster"), also known as Strasbourg Minster, is a cathedral. The cathedral was built in Gothic style. The belltower is 142 m high. It was the highest building in the world from 1647 to 1874. It is currently the second-highest cathedral in France, after Rouen Cathedral, which is 9m higher, at 151m. In 1880, Cologne Cathedral was finished (157m), and later Ulm minster (at 161m), the highest Cathedral in the World. 