This image is an illustration of the city of Bad Godesberg, Germany, situated on the Rhine River.
The description translates roughly as:
Bad Godesberg on the Rhine enjoys an incomparably beautiful location at the foot of the romantic Godesburg, in the view of the picturesque Siebengibirges and the distant mountains of the Westerwald. “What a look, what pictures, what a unique and enchanting view all round.”
–The tower in the left foreground is the remains of the Godesburg castle, destroyed in 1583.
This image likely dates from the 1920s.