While there were many mithraea located at the forts on the Limes, there was not one at the Saalburg. A model mithraeum was built there at the time of the reconstruction of the Kastell Saalburg fort in the early 1900s, but this was done in the mistaken belief that the ruins of a building found near a Roman graveyard was a mithraeum.
However, the Saalburg Kastell's museum does have an excellent exhibit of Mithraic finds from other Roman forts along the Wetterau Limes, including several large tauroctonies. Presently, there is a large display of Mithraic artifacts and art at the museum entitled Mysterium Mithras-ein antiker Geheimkult im Spiegel von Archäologie und Kunst. The exhibit also features the art of Frankfurt painter Farangis G. Yegane who has had several major exhibits at German museums since the 1990s. Yegane art is an excellent modern day tribute to the Mithraic spirit. The current exhibit at Saalburg is scheduled from 27 August 2011 to 22 January 2012.
Der rätselhafte Mithras, Taunus Zeitung 27 August 2011 Schierwater, Susanne. Die geheimen Männerclubs der Römer" hr4online.de 27 August 2011. See the last paragraph of this article captioned Ausgerechnet an der Saalburg nicht for verification that there was never a mithraeum found at Kastell Saalburg.