Collas was a successful architect and projected the baroque palaces of Finckenstein, Friedrichstein, Dönhoffstädt and Jäskendorf.
In 1716, at the request of Bogusława von Döhnhoffa made an altar and the confessional in the church in Drogosze (destroyed)).
The Briefkappelenorgel (Letter Chapel organ), a singularly manualed instrument with 16 voices was constructed by Johannes Schwaz in 1723 and from 1724 served as the organ of the Schloßkapelle (Castle Chapel) of Dönhofstädt near Rastenburg.
Drogosze |