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For the king or sultan-ruled states category, the Malay Royal towns are portrayed to be the most prominent town in the sultanate of Malay's administration structures. Apart from that, the Malay Royal Town has also been categorised as a historic town, representing the position and significance of the Malay sultanate hierarchy, dating back to the 16th century. This study's objective focuses on describing the idea of Malaysia's Malay Royal Town, which has founded the identity and image along with the elements in the tangible and intangible category that substantiates sustainability following the rapid urban development in operation where nearly all the Royal Towns of Malaysia are involved. Multiple case studies have been conducted in Malay Royal towns throughout Malaysia are Arau, Alor Setar, Kuala Kangsar, Klang, Seri Menanti, Muar, Pekan, Kuala Terengganu and Kota Bharu. In order to understand and define the concept and structure of Malay Royal towns in Malaysia, the research method adopted includes site observation, historical map overlay and semi-structured interviews. Results obtained from the research indicated that the Royal Towns of Malay had taken a major role in influencing the history and growth of the towns as they are replete with identity and cultural values. Therefore, there is a need for the Malay Royal towns' concept to be explored and appreciated by the nation so that all the distinctive elements and culture present within the Malay Royal towns can be retained for the knowledge of generations to come. [ABSTRACT FROM AUTHOR]

Energy-efficient building design models are one of the factors that need to be considered in building planning. In the morning to evening, sunlight as a source of natural light can be used as a source of lighting in buildings. By utilizing natural light, it will reduce energy consumption in buildings. Air conditioning and lighting are important factors in designing energy efficient buildings. In this study, analyzing natural and artificial lighting at Graha Pena Makassar Building. The research method is quantitative by measuring and analyzing several workspaces that are directly and indirectly related to openings in the building envelope. statistical descriptive analysis, namely entering data into tables and graphs, then analyzing the level of illumination in the analyzed workspace. The research objective was to determine the level of illuminance in several workspaces with different orientations. How is the effect of natural light distribution on building orientation and how is the artificial lighting system at workspace in the Graha Pena Makassar. The results showed that the orientation of the building had an effect on the distribution of natural light into the space. The spatial orientation facing East has a higher distribution of natural light than that of the south. Workspaces that are not directly related to window openings in the building envelope are using artificial lighting systems in the form of lights. The workspace has uneven illumination levels in its work area, because the layout and placement of lighting points have not been well planned. The contribution of this research is a reference in designing a building facade design with an attractive appearance, and can maximize the use of solar energy as a source of natural lighting, while still paying attention to the visual comfort of space users. [ABSTRACT FROM AUTHOR]