Architectural works represent an authorial creation that combines functionality and aesthetics, rendering them unique compared to other works of authorship. In addition to technical aspects, they encompass artistic elements that manifest the author's creativity. Such artistic forms that express the individuality and creativity of the author are protected by the Copyright and Related Rights Act. Each individual element of an architectural work enjoys copyright protection if it is an original intellectual creation with an individual character. However, this in no way diminishes the uniqueness of copyright regarding architectural works as a whole with all their elements. This paper deals with architectural works, with particular attention given to the amendments contained in the current Copyright and Related Rights Act. First, the historical aspect of the development of copyright in architecture will be discussed, followed by a brief overview of the current framework. Then, the concept of the author of an architectural work will be elaborated upon. The content of copyright will be distinguished through the presentation of both proprietary and moral rights. The relationship between copyright and property rights will also be presented, with special emphasis on the innovations introduced by the new Copyright and Related Rights Act regarding the destruction, modification, and restoration of architectural works and cultural heritage. The predominant interest of the owner in the case of destruction and modification of an architectural work is highlighted. In certain cases, the author's consent will be necessary. Regarding the protection of cultural heritage, the author is not authorized to oppose modifications to their work or architectural work if they are required in accordance with the Act on the Protection and Preservation of Cultural Heritage. The next topic will address copyright in legal transactions, in which significant changes have occurred concerning works created in an employment relationship and commissioned works. In contracts for commissioned works, the presumption of exploitation only applies to the contracted element of the architectural work, and if the client wishes to modify that specific element, it must be separately agreed upon in a new contract with the project's author. On the other hand, for works created in an employment relationship, the situation is different, with the presumption of the right to modify lying with the employer. The employer may modify the copyrighted work unless expressly agreed otherwise in the contract with the author. The final chapter of the paper will showcase unprotectable creations.