Nope, it is up the slope as you walk along up or down that way.
Dear Pertinax and others: Yes, the enclosures may not be grand and wide expanses ... as some might wish, but the Zoo happens to be in is in a city park with few options for expansion. It is surrounded on all sides by the Botanical Gardens that might be part of a Greater Zoo, but all past and present Municipal Governments have not shown any great foresight. Nay, even the regional Parliament which is on its doorstep could not care less.
Further, all past and present Municipality (overrun with new vision antis ..) administrations have been stalling over the zoo's future for years or have been presenting plans and then doing zilch about them. Unless, they do get serious and it will take another Vote for a new administration to do so, the animals will have to do with the small part of the entire park they have at their disposal.
Finally and despite all constraints in size and development Zoologic de Barcelona is renowned for its primate collection, management and husbandry and this being particularly true for some of the rarer and management-wise more difficult species like these mangabeys. Here, their breeding success over the years is unsurpassed in Europe (and whereas only now being copied elsewhere) has enabled the EAZA/EEP to be more serious about this threatened African rainforest primates.
