The Museum of the Order of St John is located in London, England, and showcases the history of the Knights Hospitaller, a medieval order founded in the 11th century. The museum features a collection of artifacts, documents, and exhibits that illustrate the order's role in providing care for the sick and wounded during the Crusades. Visitors can explore various displays, including paintings, uniforms, and items related to the order's activities. The museum also highlights the significance of the St John Ambulance organization, which continues the order's legacy of humanitarian work today.