The heaviest object moved along the tracks (Church of the Assumption of the Virgin Mary in Most)

Exactly 46 years ago, the heaviest cargo was transported by rail. From the gloomy Middle Ages to a modern socialist housing estate. But the storyteller with the hat, whistle and clapper was not there.
 
But that was a ride back then, you just can't see it. It all started already in the middle of the thirteenth century. Don't worry, I won't tell you here that trains were already running at that time. But then they built in the place I want to talk about…