Omsk has always been a military city. Founded in the 18th century as a border fortress it became the biggest centre of the defence industry of the USSR in the 20th century, the city of military units and army institutions. No wonder that there are real tanks and self-propelled units on many playgrounds.
The tanks were welded up and placed on playgrounds. Planes were there too, but people contrived to disassemble them.. Such a toy costs about 1 million dollars. 1000 of tanks - 1 billion dollars. One billion of dollars on children's playgrounds! Can you imagine that?