Picturesque spot in Frankfort on the Main / Saalgasse (Saal Street) with the Holy Ghost Fountain. In the background can be seen the tower of the Cathedral, the foundation of which was laid in 874 / Photograph by the National Messbildanstalt, Berlin .Amonument from the time of the Roman Emperors in Germany / The “Porta nigra” at Treves (Trier) on the Moselle, a Roman gateway dating from the 4th century / Photograph by the National Messbildanstalt, Berlin.