The Leopoldsberg (425 m, 1,394 ft) is perhaps Vienna’s most famous hill, towering over the Danube and the city. Leopoldberg’s most prominent landmark is the church which stands at the top, and which is clearly visible from Vienna below. The construction of Saint Leopold's Church on Leopoldsberg began in 1679; an expansion following a design by Antonio Beduzzi was undertaken from 1718 to 1730. Other renovations were to follow.