Ton Son Mosque, established in 1688 during the Ayutthaya Kingdom, is Bangkok's oldest mosque, reflecting the city's rich Islamic heritage. Originally constructed from teak with architectural features resembling Buddhist monasteries, it was renovated in 1952 to a Middle Eastern design, retaining Thai decorative elements. Situated in the Bangkok Yai district near the Chao Phraya River, the mosque has historically served as a hub for Muslim merchants and continues to function as an active center for Islamic learning and worship. Adjacent to the mosque lies a historic graveyard, serving as the final resting place for notable Muslim community leaders, including Chaophraya Chakri, an 18th-century prime minister of Siam. The mosque's enduring presence amidst Buddhist temples exemplifies Thailand's rich tapestry of religious and cultural diversity.