A striking feature of Sprechenstein is the circular castle keep dating from the 13th century. The great hall and chapel (dedicated to St Erasmus) with its small winged altar as well as the murals and frescoes were created in later centuries. The castle and its works of art were hit by bombs in the Second World War and later restored. Since the end of the 18th century Burg Sprechenstein has been owned by the Auersperg princes.

The ghost of the murdered knight who once lived in Burg Sprechenstein with his beloved wife is said to haunt the castle. The arrow that cost him his life is still stuck in his heart. A knight residing at nearby Refenstein castle killed him out of jealousy. This, of course, is according to legend.

Sprechenstein castle can be viewed only from the outside.