SUPERFICIES SOLO CEDIT English Abstract Andrea Gabrielová The topic of my master thesis is represented by an ancient roman principle called superficies solo cedit. This principle is gowerning the ownership of the land and is closely linked to the legal institutes as component parts, immovables, the right of superficies.. According to this principle, buldings and plants form part of the main legal object, which is land the superficies solo cedit principle leads us to the ancient Rome, which has been giving complex legal base to the current continental system of law untill nowadays. Therefore I dedicate my first chapter to the origin of the principle in roman law. Second chapter is dedicated to the ABGB Code, which is basicly inspired by roman law and as itself is the main source of the new Civil Code Nr. 89/2012 Sb. New civil code is the core of this thesis. Above all because it reestablished the superficies solo cedit principle and after many years brought it to life. Reestablishment of the principle has uncountable consequences not only in the area of private law. The most important consequence brought to the frame of private law is the unification of the legal régime of constructions and land.