I’ll try to cover zoos from Europe using ZooTierListe. Beginning with the hardest, Antarctica, as
@TinoPup did, the only holder of Adélie penguins is Faunia Madrid.
The Antarctic subspecies of Gentoo is kept in The Deep, Belfast, Edinburgh, Odense and Blijdorp.
There are no chinstraps or emperors here, so the last group of zoos are holders of king penguins. (I am using the king penguins although they are subantarctic, as I incorrectly assumed they were when I started writing this up. Oops

)
They are:
- Schönbrunn
- Antwerp
- Odense
- Marineland
- Oceanopolis
- Sealife Val d’Europe
- Berlin Zoo
- Hagenbeck
- Hellabrunn
- Wuppertal
- Blijdorp
- Selwo Marina Delfinarium
- Faunia Madrid
- Loro Parque
- Basel
- Zurich
- Birdland
- Edinburgh
- Taipei
- Jurong Bird Park
- Kelly Tarlton’s Sealife
You may have noticed the last three aren’t in Europe, but they are on ZTL so I’m doing them anyway

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Quite a few of the 23 eligible zoos (and that’s just from penguins) have a good chance of representing the 7 continents, but I don’t have the time or attention span to go through them all so I picked 3 that seemed most likely to meet the criteria (to me). They are Berlin Zoo, Tierpark Hellabrunn and Tierpark Hagenbeck.
Starting with Berlin, I used the excellent european rarities thread made by
@amur leopard as an (admittedly shrunken) list of Berlin inhabitants.
From that I found coruro for South America,
Ansell’s mole rat for Africa,
Bengal slow loris for Asia,
Blue grosbeak for North America,
Tuatara for Oceania.
Nothing popped out to me as european when I skim-read the post, but a quick check on ZTL confirms that they hold European bison as I had suspected.
The European bison for Europe and king penguin for Antarctica complete Berlin Zoo.
Moving on to Hellabrunn, it has a much smaller list of rarities than the other two, but there is still:
Agile wallaby for Oceania
Apennine chamois for Europe
Fat sand rat for Asia
Eastern vasa parrot for Africa
South american green iguana for South America
and they also hold wood bison, representing North America and king penguin for Antarctica.
Finally, Tierpark Hagenbeck’s roster.
Rocky Mountain wapiti for North America
Shield-nosed snake for Africa
Schokari sand racer for Asia
Variable poison dart frog for South America
Red kangaroo for Oceania
Razorbill for Europe
King penguin for Antarctica.
There are probably quite a few more zoos in Europe that represent all 7 continents.