Rouen: Hôtel du Bourgtheroulde

View from the east, courtyard, view of the hexagonal tower.

This image is a photochrome. Similar to a lithograph, the individual color layers are printed separately and thus receive their radiant colorfulness. Photochromes from Photochrom Zürich, abbreviated P. Z., can often be identified by a serial number followed by the letters P. Z. and a caption in gold.