Thank you, Marc - I was hoping someone would have some info on Poland - both my husband & I are of Polish ancestry, so Poland was on our bucket list. We do have plans to visit the concentration camp, Auschwitz-Birkenau, as well as the Wieliczka Salt Mines. Right now we plan on spending a few days in Krakow & a few in Warsaw - we may try to get in a side trip to Gdansk - planning that all travel within Poland will be by train. Thank you for the info.