Telegraph O and O telephone O centers O (TTC) O were O built O in O Pula B-LOC (1974) O in O Rijeka O at O Kozala O (1974 O 1976) O and O Trsat O (1976) O and O also O in O Umag O (1982) B-LOC for O the O purpose O of O improving O telecommunications O in O Istria O and B-LOC the O Rijeka O region. B-LOC They O were O designed O by O prominent O Rijeka O architect B-LOC Ninoslav O Kučan B-PER also I-PER known O for O his O design O for O the O RI O department O store O and O Krnjevo O residential O complex. O These O buildings O which O look O like O strange O machines O are O spacious O warehouses O for O high O technology O organized O according O to O the O needs O of O the O technology. O The O resulting O design O is O constrained O only O by O the O need O for O openings O and O perforations O for O ventilation O cooling O and O the O operation O of O technology. O This O situation O created O a O space O of O freedom O in O the O design O selection O and O composition O of O façade O elements O – O which O Kučan O took O advantage O of O when O designing O Telegraph O and O Telecommunication O centers O in O Rijeka O – O both O in B-LOC Kozala O and O Trsat. O When O designing O the O TTC O in O Kozala O Kučan O applied O prefabricated O and O industrially O produced O elements O architecture O "as O a O product O of O contemporary O technology" O – O a O popular O approach O in O the O 1970s. O In O this O way O Kučan O realized O a O significant O building O a O kind O of O landmark O in O the O panorama O of O the O city O which O the O author O himself O thought O could O be O the O " O city’s O first O architectural O sign" O at O the O northeast O entrance O to O the O city. O