Danish architect, of German descent, he made a significant contribution to North-European Neo-Classicism. He worked under C. F. Hansen, from whom he acquired his severe Neo-Classical style. In c.1825 he settled in Christiana (Oslo), Norway, where he assisted Linstow in connection with the building of the Royal Palace (1824–7), taught for a while at the Royal Drawing School, and became City Architect (1828) then Inspector for Buildings (1833). He produced a huge amount of architecture, including the Greek Doric Børs (Exchange—1826–52), the Norwegian Bank (1826–30), Immanuel Church, Halden in Østfold (1827–33—influenced by Hansen's Vor Frue Kirke in Copenhagen), and the monumental Oslo University (1838), plans of which were shown to Schinkel for comment, with the result that the finished buildings incorporate several Schinkelesque themes, including wall-articulation derived from the Berlin Schauspielhaus. Grosch also designed the Market Halls (1840–59) and Fire Station (1854–6), Oslo, in a red-brick Rundbogenstil. Fifty-nine churches were built after his designs, together with many houses and other buildings. He also designed numerous timber buildings based on Norwegian vernacular architecture.
Middleton & Watkin (1987);Jane Turner (1996)Weilbach (1947)