For one or two days you can visit the two best Westukrainian fortresses in Khotin and Kamyanets-Podilskyi, enjoy the picturesque nature of the river Dniester, visit the old churches and buildings of the Old Cities in Kamyanets-Podilskyi and Chernovitsy. The University, the former Residence of the Bukovinian Bishops belongs to UNESCO list. Kamyanets-Podilskyi is unique because it is situated in a small peninsula, has monuments of different epochs and nations, especially Maria on the minaret.   

You can come to Kamyanets-Podilskyi or Chernovitsy from Kyiv by train, by bus or by plain. Also I can pick up you by car from anywhere.