You can see dozens of different designs and types of mills here.
In the description of the cache by user Milyenko very poetically presented windmills of Pirogovo museum in Kiev..
But Ukraine have a places with fast mountain rivers. So, there were more common watermills.
In search of the multicache you'll meet with watermills of “Pirohovo” museum.
Stage 1: Watermill Carpathian region of Ukraine. The container whis hint for Stage 2 is hidden in the wall of natural stone behind the mill at a height of about 2 feet.
Stage 2 (Final): Watermill from Transcarpathia region. Here you will need to climb on the way up. But not very hard. The container is hidden in the wall of natural stone behind the mill at a height of about 5,5 feet and is covered with small stone.
So, You need to visit both the mills for finding this multi cache.
From September 2015 for this cache is available Wherigo cartridge. .
Have a nice search! :)