Article Detail Which is the largest Zoo in the World ? Answer: Berlin Zoological Garden (Germany) Similar Questions : 1. Which is Longest road tunnel in the World ? Answer: Lærdal Tunnel (Norway - 24.51 kilometre) 2. Which is the shortest day in the year ? Answer: December 22 3. Which is smallest planet ? Answer: Mercury 4. Which is smallest state by area of India ? Answer: Goa 5. Which is longest tributary river of India ? Answer: Yamuna 6. Which is the deepest lake of the world ? Answer: Lake Baikal 7. Which is Highest Gallantry Award in India ? Answer: Paramveer Chakra Read more from - Longest and Largest