Ulm Minster (German: Ulmer Münster) is a Lutheran church located in Ulm, State of Baden-Württemberg (Germany). Until the eventual completion of Sagrada Familia in Barcelona, Catalonia, Spain, it will remain the tallest church in the world, and the 5th tallest structure built before the 20th century, with a steeple measuring 161.5 metres (530 ft).
Sometimes erroneously referred to as Ulm Cathedral because of its great size, the church is not a cathedral as it has never been the episcopal see of a bishop.
Though the towers and all decorative elements are of stone masonry, attracting the attention of visitors, most of the walls, including the façades of the nave and choir, actually consist of visible brick.
Visitors can climb the 768 steps that lead to the top of the minster's spire. At 143 m (469 ft) it gives a panoramic view of Ulm in Baden-Württemberg and Neu-Ulm in Bavaria and, in clear weather, a vista of the Alps from Säntis to the Zugspitze.
According to en.wikipedia