Kampa is a very beautiful area in downtown Prague. It mainly consists of a large park which offers a nice view of the river and the Old Town.
People go to hang out there, smoke a waterpipe, throw a frisbee… It is also a place of culture, though. There is a very nice museum there and most importantly a lot of outdoor exhibitions take place at Kampa (you can find the ‘babies‘ here for instance).
Not to be forgotten, Kampa also offers a great refreshing place. Kavárna Mlýnská is situated inside what used to be a water-mill and the interior has remained pretty much the same, I imagine. The atmosphere of the spot is truly charming. Plus there is a pleasant backyard. When the weather is nice, I prefer to have a draught beer in a plastic cup and go outside to chat on the benches or sit on the grass.
Many interesting or famous people are spending their evenings in Kavárna Mlýnská. For instance, David Černý, the author of Entropa, Miska republika and other original pieces of art. You can find him there virtually every day, usually he will have at least two women around himself… If you get lucky, you might also spot Karel Schwarzenberg, the former popular minister of foreign affairs and presidential candidate.