Zoo Basel is a non-profit zoo in the city of Basel, Switzerland. Its official name is Zoologischer Garten Basel — or in English: Basel Zoological Garden. Basel residents affectionately call it Zolli. Its main entrance is just outside Basel's downtown strip of Steinen-Vorstadt and extends in the Birsig stream valley to Basel's city border with Binningen, Basel-Country. The zoo has over 500 animal species from all seven continents.