is a
Town located in the
Province Of Varese , along the boundary of the
Province Of Milan , in the
Lombardy region of northern
Italy . The toponym refers to the ''castellanze'' (plural form, singulra ''castellanza''), defensive territorial unities who rose around castels and other strongpoints in the then county of
Seprio . The
Olona river divides Castellanza in the two main boroughs of Castellanza proper and Castegnate.
The town is renowned for its recently established private university (Libero Istituto Universitario Carlo Cattaneo, in short LIUC).