Established in 1875, and spread over nearly 100 acres in the heart of Kolkata are the Zoological Gardens. Inaugurated by the Prince of Wales in 1876, it is one of the oldest and the largest Zoos of India. There is a vast variety of animals present here in their most natural environments. Special attractions are the white tiger, the tigon (a cross between a tiger and a lion), the litigon (a cross between a lion and a tigon) and a tortoise that is much older than the zoo itself. Giraffes and Kangaroos, Monkeys and Hippos along with various birds and reptiles are also exhibited in the Zoo. It is one of the most famous picnic spot for the people of Kolkata. Across the road in front of the Zoo, one can visit the Aquarium housing various kinds of fishes and other aquatic animals.