This picture taken on May 25, 2026 shows tourists visiting the observation deck of Baiterek Tower in Kazakhstan's capital city Astana. The railway network of Kazakhstan, the world's largest landlocked country, runs on Soviet-era broad gauge (1520mm) track and stretches more than 16,500 kilometres. Overnight sleeper train travel between major cities is a popular way to explore both the historic and modern sides of Kazakhstan, Central Asia's most developed economy. (Photo by Philip FONG / AFP via Getty Images)