This study investigated the lasting influence of British colonial architecture (129 years) on contemporary building design in Aden, Yemen. The initial focus was on the perception of British Neo-Classical architecture as a symbol of superiority, overshadowing Aden's rich architectural history. This research explored Aden's architectural transformation from pre-colonial to colonial periods, analyzing the impact of colonial-era building facades on modern design practices. Through observation and interviews with built environment professionals, the study examined the broader social, political, and economic effects of British colonialism. The findings reveal a significant influence of British colonial architecture on the design of building facades in Aden. This influence is evident in structures like the repurposed church on Crater Mountain, which now serves as a government building. The influx of British administrators, soldiers, and workers from diverse backgrounds (Indian, Somali, Jewish) during the colonial period contributed to Aden's architectural diversity by constructing churches, temples, and government buildings. Unfortunately, the ongoing war in Yemen has damaged or destroyed many of these structures. This study also found that classical architectural elements from British colonial buildings like the Military Museum in Crater, the Heritage Museum, and the Tax Office continue to influence modern design. These elements and the miniature Big Ben clock in Al-Tawahi stand as prominent symbols of British influence in Aden. However, the Yemeni government's restoration efforts for these colonial-era buildings have been slow and largely ineffective. The research further explored the enduring influence of Neo-classical architectural ideals in Aden. The study highlights the formal guidelines, specific modules, and proportions used in designing arches and columns, particularly in residential buildings. These elements contribute to the aesthetic qualities of these structures. While the British incorporated classical elements during their rule, architectural advancements and new materials have led to the incorporation of novel elements in contemporary design.