Great to see geese in aviaries, fairly rare in most zoos - they are typically wing-clipped in open enclosures.
This looks like a white stork breeding enclosure I saw in southern Sweden, including the raised platforms, but your other photo shows this species in open exhibits at Nordens Ark - has this aviary always been just for geese?
This aviary were open by Jane Goodall & the Swedish Crown princess Victoria in summer 2009, and then has always to be home for geese. Nordens Ark is also to breeding Lesser white-fronted goose in their private and off-show breeding center. The most of the goose gosling in the breeding center are going to the wildlife in northern Sweden when they are older.