Stump the German

[Eva Elisabeth]

Kudos, Roger, that is correct! The first building was/is the office building and restaurant (the original one was also designed to shelter some animals in winter), the other zoo image shows the house that housed birds of prey.
The Frankfurt zoo was founded in 1858. Here are some more contemporary images, and those who speak German might find the descriptions from the 1860 zoo guide interesting: http://www.zoo-frankfurt.de/unser-zoo/ge...n-zoo.html

Roger, you win either the book or the DVD "Serengeti Shall Not Die", both equally fascinating and most touching, written/directed in 1959 by Prof. Dr. Dr. B. Grzimek, the zoo's director from 1945-1974. The movie won the Academy Award for Best Documentary Feature.

http://www.wildfilmhistory.org/film/291/...t+Die.html
http://www.amazon.com/s?ie=UTF8&x=0&ref_...bileweb-20