As the city's biggest green space, the Osaka Tennōji Zoo & Park can rightly be described as the lungs of Osaka. Lined with flower beds and cherry blossom trees, the park and the adjoining zoo are a nature lover's dream come true. The Osaka Tennōji Zoo which is part of this enclave was opened in 1915 and is now home to elephants, lions, giraffes and other species who are allowed to roam free in large enclosures.