Schlosskapelle, Renaissance chapel in Schloss Johannisburg, Aschaffenburg, Germany

The Schlosskapelle occupies the western half of the north wing of Schloss Johannisburg, built against the keep of the medieval castle. Its rectangular interior spans five bays over the ground and first floors, covered by a barrel vault with lunettes whose ribs form a diamond pattern resting on Renaissance consoles. The portal of red Main sandstone, by Georg Ridinger and sculptor Hans Juncker, is flanked by columns with figures of John the Baptist and John the Evangelist, with a relief of the Baptism of Jesus above.

A chapel consecrated to John the Baptist by Archbishop Werner von Eppstein of Mainz is first documented in 1285, within the medieval castle on the site. It survived the castle's destruction in the Margrave War of 1552. The present chapel belongs to the palace built from 1605 to 1614 for Elector-Archbishop Johann Schweikhard von Cronberg under architect Georg Ridinger. On 21 November 1944 the ribbed vault collapsed in an air raid; the roof was rebuilt from 1951 and the net vault reconstructed ten years later.

The chapel is dedicated to John the Baptist, and its sandstone portal by Georg Ridinger and sculptor Hans Juncker shows the two Johns between fluted column pairs: the Baptist in a fur garment with a lamb on the left, the Evangelist with an eagle at his feet on the right. Above the entrance a relief depicts the baptism of Jesus in the Jordan, crowned by a Madonna and Child in the gable.

The chapel is part of the palace and can be visited during regular opening hours. Access is included as part of the palace tour, and visitors should note that the space may not be accessible during events.

The four alabaster heads returned from America in 1993 were reinserted into the altar, which had been restored by sculptor Ingram Spengler from 1962 onward using only surviving pieces, so the cross stayed without a corpus until 1985. The chapel alone kept its original spatial form among the palace's main rooms.