This is a scenic exhibit that would likely never be seen in a major European zoo these days, as all the vultures have pinioned feathers in San Diego. In Europe, vultures can fly as they are always located in aviaries, much the same as flamingos in European zoos.
@snowleopard Some exhibits with pinioned vultures do exist or have existed in Europe, but many zoos, like Antwerp, have abandoned this way of keeping vultures in the last few decades. I know of two non-aviary exhibits (Han-sur-Lesse and Doué) still in existence, and those house vultures rescued after accidents that are no longer able to fly.
@snowleopard in the case flamingoes it's actually still more common to find them pinioned in Europe, but when it comes down to new exhibits aviaries are definitively the golden standard over here these days (with good reason as well). Even for cranes, ground hornbills, pelicans and waterfowl aviaries are becoming more and more commonplace. Vultures have already near-completed this transition, as have parrots, ibises, herons, spoonbills, .... It's quite weird how the USA is lagging behind so much in that regard.
