Ulm Minster is a Lutheran church located in Ulm, State of Baden-Württemberg. It is currently the tallest church in the world and will likely remain so until the eventual completion of Sagrada Familia in Barcelona. The church is the fifth-tallest structure built before the 20th century, with a steeple measuring 161.5 metres.
Though it is sometimes 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. Therefore, the building is sometimes referred to as a brick church. As such, it lays claim to the rank of second- to fourth-largest, after San Petronio Basilica in Bologna and together with Frauenkirche in Munich and St. Mary's Church in Gdańsk. The tower however was mainly built from sandstone.
Ulm Minster was begun in the Gothic architecture of the Late Middle Ages but the building was not completed until the late 19th century after a hiatus of centuries.