Berg was behind the establishment of the Architects Association Support Fund, to which he devoted much time and effort, also supporting it financially. He participated in exhibitions at Charlottenborg Palace in 1885, 1905 and 1910; a commemorative exhibition was held in 1930. Berg also participated in the Nordic Exhibition of 1888, and the Copenhagen City Hall Exhibition in 1901. He exhibited in Berlin in 1910 and 1911.