Initially, the zoo was located in the park of the former royal palace, with the primary attraction being a Eurasian black vulture caught in Bulgaria and exhibited in a cage in the garden. Later, pheasants and deer were added to the collection, but since the exhibits and facilities of the time proved inadequate to accommodate a pair of brown bears, Tsar Ferdinand of Bulgaria ordered a grant of land to be awarded to Sofia Zoo on the grounds of the former botanical garden, then in the outskirts of the city.
Source: Wikipedia
