Bleachery is the second historic complex of Linen Factory in Zyrardów. It's named from bleaching the fabrics here, but it wasn't the only function of this complex. Many buildings were built in late 19th or early 20th century, I recommend walk between theese red brick buildings.
Zyrardów Linen Factory bankrupt and was closed in 90s of Twentieth century. few abandoned buildings. At the Central Factory Complex, all buildings have been already changed into lofts, shops, warehouses... last abandoned factory hall was demolished in November 2009. But there are still few abandoned buildings at Bleachery Complex, there are also three small factories which continue the tradition of linen industry, and elegant shop with linen goods.
I have placed the cache in one of theese abandoned historic building. Find the entrance, find the stairs, and go up as high as it's possible, to the end of the stairs. Be careful! You can get hurt here, in many interesting ways! ;-)
edit4: Now it's more difficult to get there. The windows at the 1st floor have been bricked up, and the only way is to climb on the wall to the 2nd floor. Be careful, it's very difficult and dangerous!