Here is the overview of what Vienna has on offer, it keeps 11 species (compared to 27 in the Parisian zoos combined).
The bulk is held in the historical primate house, which is one of those beatifully restored buildings the Tiergarten is famous for:
@honeybadger
There are 4 enclosures, the former orangutan exhibit now holds a breeding group of king colobus (& meerkats...):
The other side of the building houses several S-American primates:
@lintworm
@honeybadger
@Philipine eagle
@JamesB - white faced saki outdoor cage.
In total there are 3 enclosures with a total of 5 species.
Then there is a mock rock heavy but well-designed and large barbary sheep & barbary macaque enclosure:
@Philipine eagle
@Philipine eagle
The orangutan were moved to the former Orangerie, now called Orang.erie. It is another beautiful example on how to keep animals in a historical building while preserving the architecture. Unfortunately there is only 1 indoor and only 1 outdoor enclosure, which might be fine for the pair they keep, but is not the optimal set-up:
@Philipine eagle
@honeybadger
Red-ruffed lemurs + ring-tailed lemur and white-handed gibbon are kept on a pair of islands. Nothing spectacular, but certainly not bad. Especially the indoor with all the glass is relatively large and airy.
@Maguari
Compared with the bright house in Vienna, the one in Paris looks really gloomy. Fortunately better is on its way for the orangutans. For its age the tall cages aren't that bad for the mangabeys and guenons kept in this building, but it is not really the brightest spot in the Menagerie and the orang utan enclosure as it is now, is just far too small.
@Austin the Sengi
@twilighter
The callitrichids in Paris are kept in well-planted but really low aviaries in a former bird house. It is a lovely setting, but not really optimal, especially for the squirrel monkeys:
@lintworm
Given the quality that Vienna has and the lack thereof at the Jardin des Plantes, I really think a 4-1 score is not warranted.