From April 15-17 I was in Krakow, Poland's former capital and commonly said to be the most beautiful city in the country. It's one of the only cities that wasn't completely destroyed in WWII.
We also visited nearby Wieliczka but I have no photos of it because you had to pay to take pictures. It's Poland's salt mine, because mining is still popular here. It was really neat to go underground and see all of the interworking of the mines.
We also visited Auschwitz and Birkenau, the most known concentration camps in Poland.