The house that originally stood at Ulica Długa 12 was acquired by Johann Uphagen,
a town councillor, in 1775. He had it demolished, and a new residence was built
in its place. The architect, Johann Benjamin Dreyer, completed the project in
1787. The result was an attractive building combining Baroque, Rococo and early
Neo-Classical features.

The sole ornamentation of the restrained façade is the Rococo decoration to the
door, which is inscribed with the initial A, for Abigail, the owner’s wife. The
interiors, featuring Rococo and Neo-Classical elements, are splendid.