The Lord of Sent appears as a vassal of the Bishop of Chur around 1160, but is never listed as patron of the church or owner of the castle.

Based on the design and construction, the Romanesque church of St. Peter (San Peder) was probably built in the 12th century.

On the north wall at the fifth story there appears to be a bricked over high entrance, which was a common feature of defensive towers.

[2] During an excavation in 1937 the larger tower south of the church was discovered.

In 1856 the hill was acquired by the Romansh poet Peider Lansel, who repaired and restored the church ruins in 1901.