Photo taken on May 17, 2016, shows a steam train at the Nairobi Railway Museum, in Nairobi, capital of Kenya. The Nairobi Railway Museum is adjacent to Nairobi Railway Station and operated by Kenya Railways Corporation. It is the only railway museum in East Africa. (Xinhua/Pan Siwei)

Photo taken on May 17, 2016, shows a steam train at the Nairobi Railway Museum, in Nairobi, capital of Kenya. The Nairobi Railway Museum is adjacent to Nairobi Railway Station and operated by Kenya Railways Corporation. It is the only railway museum in East Africa. (Xinhua/Sun Ruibo)

Photo taken on May 17, 2016, shows the exterior of the Nairobi Railway Museum, in Nairobi, capital of Kenya. The Nairobi Railway Museum is adjacent to Nairobi Railway Station and operated by Kenya Railways Corporation. It is the only railway museum in East Africa. (Xinhua/Li Baishun)

Photo taken on May 17, 2016, shows a steam train at the Nairobi Railway Museum, in Nairobi, capital of Kenya. The Nairobi Railway Museum is adjacent to Nairobi Railway Station and operated by Kenya Railways Corporation. It is the only railway museum in East Africa. (Xinhua/Li Baishun)

Photo taken on May 17, 2016, shows a steam train at the Nairobi Railway Museum, in Nairobi, capital of Kenya. The Nairobi Railway Museum is adjacent to Nairobi Railway Station and operated by Kenya Railways Corporation. It is the only railway museum in East Africa. (Xinhua/Li Baishun)

Photo taken on May 17, 2016, shows carriages of an old train at the Nairobi Railway Museum, in Nairobi, Kenya. The Nairobi Railway Museum is adjacent to Nairobi Railway Station and operated by Kenya Railways Corporation. It is the only railway museum in East Africa. (Xinhua/Pan Siwei)

Photo taken on May 17, 2016, shows a steam train at the Nairobi Railway Museum, in Nairobi, capital of Kenya. The Nairobi Railway Museum is adjacent to Nairobi Railway Station and operated by Kenya Railways Corporation. It is the only railway museum in East Africa. (Xinhua/Pan Siwei)

Photo taken on May 17, 2016, shows a steam train at the Nairobi Railway Museum, in Nairobi, capital of Kenya. The Nairobi Railway Museum is adjacent to Nairobi Railway Station and operated by Kenya Railways Corporation. It is the only railway museum in East Africa. (Xinhua/Sun Ruibo)

Photo taken on May 17, 2016, shows a steam train at the Nairobi Railway Museum, in Nairobi, capital of Kenya. The Nairobi Railway Museum is adjacent to Nairobi Railway Station and operated by Kenya Railways Corporation. It is the only railway museum in East Africa. (Xinhua/Sun Ruibo)