The Istanbul Courthouse Building Project has been designed to make a significant contribution to Turkey's legal system. The project combines modern architecture with traditional elements, providing spacious and bright areas that prioritize functionality. Located in a central position, this building integrates with the surrounding green spaces, enhancing the aesthetic value of the city. The use of DEMTAŞ basalt and andesite materials, known for their durability, has been integral to the project. These materials ensure excellent results in both aesthetic and functional aspects. The building is reinforced with environmentally-friendly technologies, taking energy efficiency into account during its design.