what is the purpose of the training center that you mentioned?
To train cosmonauts for their space missions
Yuri Gagarin Cosmonaut Training Center
is a Russian training facility responsible for training cosmonauts for their space missions. 
what is yuri gagarin? A Soviet Air Forces pilot and cosmonaut who became the first human to journey into outer space when did he take this journey? 12 April 1961 has he received tributes? A number of buildings and locations have been named for him like  Yuri Gagarin Cosmonaut Training Center, Gagarin's Start and Gagarin Raion is there any statue of him? Yes. At Admiralty Arch in The Mall in London, NASA's original spaceflight headquarters on South Wayside Drive in Houston and in towns like Orenburg, Cheboksary and Irkutsk
wiki:24507304
Yuri Gagarin Cosmonaut Training Center [SEP] Introduction
The Yuri A. Gagarin State Scientific Research-and-Testing Cosmonaut Training Center (GCTC; Russian: Центр подготовки космонавтов имени Ю. А. Гагарина) is a Russian training facility responsible for training cosmonauts for their space missions. It is in Star City of Moscow Oblast, a name which may refer to the facility itself or to its grounds.