Thirty minutes outside of Krakow lies the 700-year-old Wieliczka Salt Mine .  If touring a salt mine isn't high on your list of things to do, well, you should re-evaluate your list.  Visitors descend hundreds of meters below ground  on foot to explore the mine on guided tours.  While the mine has the the geological formations you might expect, would you expect a tennis court?  Or a ball room carved from salt?  How about a chapel, and even a snack bar?  The most thrilling part of the tour is the exit from the mine, which involves a speedy, pitch-black ride in a caged mine elevator.  And don't forget to pick up some Princess Kinga bath salts at the gift shop. 

 The mine is easily reached by bus from Kraków by Lux minibuses which go regularly from the bus station (RDA) and also stop opposite Poczta Głowny.  They stop at the mine and also pick up from there for the return journey to Kraków.  A single ticket is 2.5 zł.  At the mine you will have to wait for a tour group of your language choice to form, which according to the mines website will be no longer than an hour as you are not allowed down the mine without a guide.  You can also hire your own guide if you wish.  Be aware the mine can be very busy so getting there early is advisable.

 Here are a few photos of the mine: