Since Roman times, the springs in Wiesbaden, Germany have been recognized for their various qualities - as a place to bathe horses, a source for red hair dye, and a restorative tonic. The water may taste like salt and sulfur, but drinking it is reputed to help rheumatoid problems along with a number of other ailments. Kaiser Wilhelm II was a regular visitor here, but Wiesbaden was also frequented by Russian nobility and visitors from throughout Europe.
The buildings surrounding this particular thermal spring (the Kochbrunnen) were designed by architect Wilhelm Bogler in the 1880s. Although they survived World War II, they were torn down in the 1960s.
Here are some additional cards showing the building interior and exterior.
In the photo above, it appears that the man in the foreground on the left moved as the photo was being taken, resulting in a strange ghost image of his face.
Here are the backs of the cards in the same order.