Founded in 1862, Melbourne Zoo is Australia`s oldest and the third oldest in the world. It has changed greatly over the years, replacing the old barred cages and pits with more animal friendly enclosures. The zoo is divided into bio-climatic zones using landscape immersion to help animals acclimatise to the Australian environment and is at the forefront of the captive Lowland Gorilla breeding program. The butterfly house, lion park and primate enclosure are among the highlights.