An impression of what a visit to the Rotterdam Zoo (Diergaarde Blijdorp) looked like in 1963. The attitude of people towards the animals on display was different then, while many enclosures still needed to be upgraded to meet the standard at the time.

(Source: Rotterdam City Archives – via Archieven.nl; Collection Bewegend Beeld THA; author J.C. de Geus; copyright holder Municipality of Rotterdam (City Archives); copyright status unknown)