This cat­a­logue oft the work oft the ar­chi­tect Hans Koll­hoff (Loben­stein/Thur, Ger­many, 1946), chrono­log­i­cal sur­vey of his out­put from 1980 up to 1991. Dur­ing these ten years the ar­chi­tect has pro­duced a con­sid­er­able num­ber of pro­jects, rang­ing from ear­ly schemes for hous­ing blocks to more re­cent pro­jects in which his vi­sion oft he city clear­ly demon­strates how the fer­til­i­ty and po­ten­cy of his ideas re­veals it­self in the test­ing out of bound­aries.

Fritz Neumey­er, in his in­tro­duc­tions „Broad­en­ing hori­zons: the ar­chi­tec­ture of ur­ban trans­for­ma­tion“, de­scribes how these ideas and con­cepts, root­ed in the city it­self, in­ter­pret the new con­text with del­i­ca­cy and in­ge­nu­ity.