A Hamburg pennant snaps proudly above the glass-and-timber cupola of the main performance building at Carl Hagenbeck's revolutionary Tierpark in Stellingen — captured in this vivid color lithograph just one year after the world's first zoo without bars opened its gates in 1907, transforming how humanity would forever relate to the animal kingdom. Carl Hagenbeck's visionary "panorama" zoo concept, replacing cages with open enclosures and naturalistic moats, was so influential that virtually every modern zoo in the world traces its design philosophy to this very building. The caption identifies it as the "Hauptgebäude für Raubtier-Dressurvorstellungen" — the main building for predator-training performances — its half-timbered facade and onion-domed tower giving it the festive air of a World's Fair pavilion. Sent from Hamburg on 22 September 1908, postmarked "Hamburg 4b / Elbe," the card was addressed to Toni — a woman named Rüte (or similar) in Itzehoe, Holstein — and carries a German Reich 5-Pfennig green stamp. The message, in flowing German script, describes a visit to the zoo with vivid personal detail.