The present building on Number 1 (Deucalion 10) is the product of a reconstruction in the 20th century when two older buildings (Deucalion 4 & 5) were merged. They were separated by a medieval alley parallel to Funckens Gränd, of which remains a narrow and elongated backyard passing through the present block. All other traces of the medieval neighbourhood have been obliterated by repeated reconstructions over hundreds of years.
The current structure on Number 1 (Deucalion 10) is a result of a reconstruction in the 20th century, combining two older buildings (Deucalion 4 & 5), which were previously separated by a medieval passageway parallel to Funckens Gränd. The remaining traces of the medieval neighborhood have been erased over time due to repeated reconstructions.