  The discovery of high temperature superconductors (HTS) has led to
understanding that, in order to explain and utilize the phenomenon, completely
new physical approaches should be introduced at all scales: microscopic,
mesoscopic, macroscopic. Leaving first two scales beyond the scope of the
present paper we focus in the upper limit of the last one, the study of the
magnetic flux dynamics in HTS bulks - the dynamics of the 'compact vortex
structures'. A new direction in the experimental superconducting physics, the
investigation of HTS bulks with levitation techniques, which has been
elaborated during last years to effectively explore the subject, as well as the
new fundamental and applied results obtained therefrom are overviewed here.
