On the eastern side of the Belarusian capital city, the Slepianka or Slepnya River once flowed undisturbed on a meandering course through the countryside. With the arrival of urbanization, the city administration tamed this stream by rerouting its flow through a 13 mile (22 kilometers) concrete channel that runs through nine parks. The waterway is complete with 13 cascades that are each unique in their Brutalist design. Construction on the project began in 1981 and was completed in 1985. The most interactive of these cascades is located near the Agat…