The Tisch Family Zoological gardens is the modern reincarnation of the original Jerusalem Biblical Zoo. Originally the zoo was dedicated to exhibiting animals mentioned in the bible. Today the Zoo is a world class institution which still mentions biblical sources of Animal names when relevant, but focuses mainly on husbandry and ecology. For tourists the Zoo is a great outdoor activity which children will love. There is a man-made lake and gardens where one can picnic. This can be a full-day activity or covered in just a few hours. I would recommend it primarily as a fun break from the usual sites and a pleasant family day-trip.