1. Screening wall at the Federal Garden Show in Stuttgart. Reinforced concrete blocks. 1a shows the highly sculptural wall in a side view; 1b is a variant, using the same blocks in a different arrangement. 2. Screening wall at the Protestant St. John's Church in Sindelfingen (architect: Heinz Rall, Stuttgart). V-shaped elements are joined diagonally. 3 and 3a: Hexagonal blocks form a honeycomb pattern.
