The Protestant Memorial Church in Bad Homburg's city district of Kirdorf was built during the Art-Nouveau period. It was a donation by Johann Georg Dippel, a citizen of Bad Homburg, who returned to his home town to retire after working for many years as a financial and real estate broker in London. During a period of civic incorporation in 1902, more and more Protestant citizens of Homburg moved to the new, traditionally Catholic district. This influx gave rise to the desire for a Protestant place of worship. On 17 August 1913, the memorial church, designed by the architect, Heinrich Jacobi, was inaugurated. However, the foundation's funds were not sufficient for its interior decoration. Kaiser Wilhelm II therefore donated the pulpit, altar, baptismal font, chandelier and communion vessels from the Castle Church, which was no longer being used for services because the Church of the Redeemer had recently been built adjacent to the castle. The seven round windows were also donated by local parishioners. The organ, built in 1988 by the Strasbourg workshop of Alfred Kern, lends a very special tone to Bad Homburg's organ landscape.