Nawab Wajid Ali Shah Zoological Garden is a family-friendly wildlife attraction in Lucknow, useful for travelers with children or anyone who wants a relaxed half-day away from churches, plazas, and museums. It is a conventional zoo-style stop, but it fills a real gap in an itinerary.
Go early if heat or crowds are a concern, and check the official source for current hours before committing the trip across town. It is strongest as an easy outing rather than as the defining reason to visit the city.