  We discuss a new class of phenomena based on strong interaction between
magnetic superstructures and vortices in superconductors in combined
heterogeneous structures. An inhomogeneous magnetization can pin vortices or
create them spontaneously changing drastically properties of the
superconductor. On the other hand, the interaction between magnetic moments
mediated by vortices can result in specific types of magnetic ordering. The
same interaction can create coupled magnetic-superconducting defects. We
discuss possible experimental observation of magnetism controlled vortex matter
in superconducting films with magnetic nanoscale dots or stripes and layered
systems with alternating superconducting and magnetic layers.
