Muslims experience the presence of the divine by being called to the Mosque five times daily for prayer, two during sunset and night. Additionally, prayer's emotional and physical aspects are sometimes not aligned due to the space and its connection to the lighting in which it is held. Without emotional and physical aspects in sync, the connection between the two cannot be established. The thesis aims to explore how the use of artificial lighting can affect the spiritual atmosphere of the Halid Mosque in Ulcinj, Montenegro. Therefore, the goal is to analyze the factors of artificial lighting contributing to this atmosphere and focus on areas that create this perception of a sacred space. The methodology used for the project comprises two main phases. The first phase involves a literature analysis and observing the spiritual atmosphere of the Et'hem Bey Mosque in Tirana. The second phase involves a case study of the Halid Mosque, conducted through personal observation and qualitative and quantitative study. The results obtained from these two phases provide a basis for creating a conceptual design proposal for the Halid Mosque.  The research revealed that dark spaces within the Mosque are not allowed since darkness is considered infidelity in Islam. Therefore, one of the main key elements of the conceptual design of the Halid Mosque is to create mediums of light that strive to implement a space that fosters an atmosphere for spiritual reflection, worship, and community engagement.