Reichenau Abbey is a historic Benedictine monastery located on Reichenau Island in Lake Constance, Germany. Founded in the 8th century, it became a significant center for learning and culture during the Middle Ages. The abbey is known for its remarkable contributions to art, particularly illuminated manuscripts, and its influence on the spread of Christianity in the region. The abbey complex includes several notable buildings, such as the Church of St. George, which features stunning frescoes and architecture. In 2000, Reichenau Island was designated a UNESCO World Heritage Site, recognizing its cultural and historical importance in European history.