There are quite frequent and inexpensive buses 11zl each way or minibuses 8zl each way - depart from the basement level of the main bus station to and from the main bus station in Krakow, or guided tours are available from most hotels or tourist information centres. The bus takes about one and a half hours - it is usually busy and stops locally along the way. Also, trains regularly run to Oswiecim, you can purchase a return ticket for approx 45zl or one way for approx 23zl. A bus can then be caught to Auschwitz, or you can walk there approx 1 km in about 20-25 minutes. There is a shuttle bus between Auschwitz and Birkenau. It is free and goes every half hour from Auschwitz to Birkenau it leaves on the hour at half hourly intervals and going the opposite way it is 15 minutes of the hour at half hourly intervals, or you can just walk the two miles between the camps although it isn't a very nice walk as it is along the roads. If you've just missed a bus, a taxi between the sites will cost about 15 zl.
Local Krakow - 1hr30m and international e.g. Vienna, Prague trains also stop at the nearby town of OÅwiÄcim 3km.
