Located in the historic Hamarwein district of Mogadishu, the Arba'a Rukun Mosque is an iconic structure dating back to 1269 CE. Named for its distinctive square shape with four supporting pillars, this mosque stands as a testament to the city's medieval prominence in Islamic scholarship and trade. Originally constructed in an area known as Malmalah, where local elders once gathered, it reflects the rich cultural and architectural heritage of Mogadishu. Despite recent restorations, the mosque retains its original layout, including a mihrab with an inscription revealing its Persian founder, Khusraw bin Muhammad al-Shirazi. This site offers a fascinating glimpse into the historic ties between South Persia and Mogadishu.