Sanjay Gandhi Biological Park, spread over 34 acres of land, is located in Patna
. Established in 1969 as a botanical garden, it was later developed into a biological park. It has been declared a protected forest by the state government.
One of the 16 large zoos in India, the park is home to over 300 species of trees, herbs and shrubs. There is an exclusive nursery for medicinal plants. Rose garden, orchid house and grass lawns can also be found here.
Apart from this, it harbors more than 800 animals. Aquarium and snake house are the added attractions.