Anyone been to the Ukraine? got 4 days there next year and wondering what to see?

Go to Carpathian Mountains, it is in the Western Ukraine. The main town is Ivano-Frankivsk, you can take a bus trip to Yaremche, where you can hike in the beautiful mountains, see gorgeous lakes and creeks. People are friendly, but don't speak English, so learn a few useful frases in Ukrainian. The culture is slightly different from Eastern Ukraine, you'll see a lot of hand-made goods, which are absolutely unique to this region.