The paper notes the attempts that are being made to doctrinally substantiate a broad approach, according to which the «international law of cultural property» was formed as a special (autonomous) legal framework. Without sharing such views, the author justifies the existence of an intersectoral institute for the international legal protection of cultural property, and also notes that the protection of cultural property in the actual situation of armed conflict is a branch institute of international humanitarian law (IHL), characterized by the presence of special principles and established scope of application (ratione materiae and ratione temporis). For the purposes of IHL, the definition of «cultural property» is formulated. It implies movable and immovable objects of the material world (objects) that are subject to identification and have no military purpose. They are of fundamental importance for the cultural heritage of not only a single people, but also the entire international community, included in the relevant register/list and under common, special or enhanced international legal protection, including their storage sites or concentration centers.A reasonable proposal has been made to introduce the concept of the «1954 Hague Convention system» into scientific circulation. The central part of it is formed by the 1954 Convention for the Protection of Cultural Property in the Event of Armed Conflict, including the Executive Regulations as an integral part of it, and additional Protocols to it (Optional Protocol I and the Second Protocol of 1999), as well as three resolutions attached to the Final Act of the 1954 Conference. It is emphasized that the Second Protocol of 1999, which Russia has not ratified, provided for the creation of institutional structures designed to complement the system of implementation of the Hague Convention of 1954. Based on the analysis of the «1954 Hague Convention system», three conventional regimes for the protection of cultural property in the actual situation of armed conflict (general, special and enhanced) have been established and their features have been analyzed.