Duke and Duchess of Cambridge in Himalayan kingdom of Bhutan

Britain's Prince William and his wife Kate, the Duchess of Cambridge arrive at the Centre for Wildlife Rehabilitation and Conservation (CWRC), at Panbari reserve forest in Kaziranga, in the north-eastern state of Assam, India, April 13, 2016. Prince William and his wife, Kate, planned their visit to Kaziranga specifically to focus global attention on conservation. The 480-square-kilometer (185-square-mile) grassland park is home to the world's largest population of rare, one-horned rhinos as well as other endangered species including swamp deer and the Hoolock gibbon. (Adnan Abidi/ Pool photo via AP)