The largest brownfield in Ostrava was at Nová Karolina (‘New Karolina’), in the immediate vicinity of the city centre. It was originally the site of the Karolina coking plant complex. After a full decontamination, some of the original buildings were granted legal heritage protection as fine examples of historic industrial architecture; they have now been converted for use as a social/cultural centre. The remaining part of the brownfield was prepared for the construction of an entirely new city centre quarter.
Today it is the site of a multifunctional development (240 000 m2) incorporating retail premises (86 000 m2), a residential complex (1 200 apartments), offices (60 000 m2), facilities for sports, leisure and entertainment (12 000 m2), plus extensive green areas.