Songo Mnara is an archaeological site located on an island off the coast of Tanzania. It is known for its well-preserved ruins of a Swahili settlement that dates back to the 15th century. The site features stone structures, including mosques and houses, which reflect the architectural style of the time and the influence of trade in the Indian Ocean. The site is significant for understanding the history of the Swahili Coast and the interactions between African, Arab, and Persian cultures. Excavations at Songo Mnara have revealed artifacts such as pottery, glass, and coins, providing insights into the daily life and trade practices of its inhabitants.