and 827 is one of the very few Carolingian buildings that have survived largely intact. The Basilica's crypt once housed Saints Peter's and Marcellinus's relics, which had been stolen from Rome on Einhard's instructions by his notary Ratleik. His servants' nightmares and the remains' "sweating blood" there, however, made Einhard think that this arrangement did not feel right. He thus transferred himself, his wife, the relics and his seat to Ober-Mulinheim am Main, now known as Seligenstadt, which thereby became a pilgrimage site with a new, larger basilica. The story that has been handed down says that the relics hidden from Rome were transported to Saint-Maurice-en-Valais, now in Switzerland, whence they were then brought to Michelstadt by a cheering pilgrimage procession. The Basilica in Steinbach was converted, expanded, and rededicated many times and later served first as a hospital and then in the 17th century as a barn. Once it was rediscovered in 1873 as being Carolingian, the exploration and safeguarding of the parts of the basilica that were still intact began. The Einhards-Basilika was until 1967 owned by the princely Counts of Erbach-Fürstenau. The grounds are now owned by the state of Hesse. The castle of the Counts of Erbach-Fürstenau The castle in the outlying centre of Steinbach was built by the Electorate of Mainz in the 14th century to protect the neighboring Steinbach Monastery and the surrounding estates against the Electoral Palatinate. The construction on feudal land of the lords of Erbach, who were fiefs of the counts palatine, led to complications that were first resolved with the granting of a fiefdom and later the pledging to Erbach. The castle was first mentioned in 1310. In 1317 Eberhard VI. of Erbach was mentioned as Burgmann to the count palatine. After the castle had initially been granted to Erbach as a Mainz fief, the lords of Erbach acquired Fürstenau in 1355 and finally in 1454. The County of Erbach became an Imperial state within the Franconian Circle in 1532. Erbach-Breuberg partitioned from Erbach in 1647. In 1717 Erbach was divided into Erbach-Erbach, Erbach-Fürstenau, and Erbach-Schönberg (Schönberg near Bensheim). 1806 the counties were mediatised. The palace complex is a series of building styles which includes remains of the old Electorate of Mainz border fortifications and moated castle (about 1300) on the north side to the Gothic works by the stonecutters who came from Strasbourg to Steinbach, to the gigantic Renaissance-style