The Beni Makhan Mosque, also known as the Ertuğrul Gazi Mosque, is a significant historical and architectural landmark located in the city of Mary in Turkmenistan. Constructed in 1909, it was named after the Ottoman prince Ertuğrul Gazi, the father of Osman I, founder of the Ottoman Empire. The mosque is a unique example of the blending of Islamic architecture with local Turkmen elements. The primary structure features a central hall with a sizable dome, surrounded by smaller domes in the corners. The facade includes intricate patterns typical of Islamic design, while the interior is adorned with native Turkmen decor. The mosque carries cultural and spiritual significance, serving as a place of worship and a symbol of the historical ties between Turkmenistan and Turkey. The mosque was restored in the late 20th century, ensuring its preservation as a cultural heritage site. The Beni Makhan Mosque stands as a testament to Turkmenistan's Islamic heritage and architectural ingenuity, drawing visitors interested in history, architecture, and religion.