Galaxies with polar rings (PRGs) keep aloof among the objects which traditionally are considered as a result of interaction between galaxies. Indeed, close encounters are the reason of disturbance of the galaxy form and appearance of asymmetric structures such as bridges, tails and so on, while the merging between the galaxies is considered to result in the origin of smoothed elliptical-like objects where the remnants of merged objects are well mixed. To the contrary, “classic” PRGs (category A in Whitmore et al. 1990 (PRC)) are symmetric objects in which the remnants of interacting galaxies are not mixed but stay in a quasi-stationary state for a long time, may be comparable with Hubble time. Detailed investigation of PRGs supply the new approaches to the study of such important problems as the shape of galactic potential, the frequency of interactions and mergings, influence of interactions on global structure of galaxies, on their nuclear activity etc.

Probably the most important problem concerning PRGs is their origin. It is usually contended that the collapse of single protogalactic cloud cannot create the object with two nearly orthogonal large-scale kinematic systems and therefore in the history of such objects some second event (for instance, interaction or 