Maymyo, "the city of flowers", is situated 69 km east of Mandalay over 1 100 metres above sea level, was formerly a summer station during the British annexation as it is temperate. It was stationed by Colonel May in 1886, a year after the annexation of the whole of Myanmar by the British. Botanical Garden, well laid out by a British botanist on the design of KEW Garden in England, is one of the best places to visit in Maymyo. In several plots were planted 4840 trees mostly pine varieties, 575 different floral species and many exotic fruit, flower and shade trees from abroad. Besides, vast meadows and several seasonal flowerbeds were arranged and hundreds of wild orchids were collected and displayed in the Orchid Green House in the garden. The garden thus became one of the world-class botanical gardens. Now it is renamed as the National Kandaw Gyi Garden, yet under the same charm and beauty. There is another highlight: Peik Chin Myaung, also known as Maha Nandawun Cave, situated near Wetwun village 20km away from Maymyo, is estimated by the geologists that it could be between 230 million and 310 million years old.