The Huaisheng Mosque in Guangzhou, also known as the Lighthouse Mosque, is, at over 1,300 years old, one of the oldest mosques in the world. It was named in memory of Prophet Muhammad. Its calling tower is 36 feet tall with a pointed tip. The building used to serve as a beacon for boats, which is how it got its alternative name. It has many other variant names like Great Mosque of Canton, Guangta Si Mosque, Hwai Sun Su Mosque, Huai-Sheng Mosque, Ying Tong Mosque, Huai-Shang Mosque, and Huai-Shang Si Mosque.