This study tested three possible predictors of visitor spatial distribution in a naturalistic zoological park. The unit of analysis was the axial line; a measure derived from Space Syntax theory. Each axial line within the zoo was assigned three values as potential predictors: a spatial integration value, an activity popularity value and an animal popularity value. The study was conducted twice under different seasonal and spatial conditions with the same result. Animal popularity was the only significant predictor of visitor distribution. This suggests that the design of zoo environments could use the popularity of animals as magnets to most effectively draw people through all the spaces of the zoo.