Krakow

You can see plenty of interesting old buildings just by wondering around the old town Krakow for the afternoon. The other thing which is worth seeing in the city itself is the castle, and attached church. Krakow used was the capital of the country until a few hundred years ago, so there is plenty of royalty buried in the crypt (appreciably the amount of buried royalty isn't what makes a church cool in everybody's eyes, but this one has a cool tower you can climb up as well). This costs a few zlotys to go into, but is probably worth every penny. The inside of the castle itself is rather more expensive to get into, but might be worth a visit if you like that sort of thing

Just outside Krakow in