People usually visit Cesky Krumlov for it's truly magnificent monuments, but unfortunately they don't know much about the nature beauties around the town. If you'd like to chill out in a raft on the river, have a bike trip or simply enjoy the nature aroud, you can have it. On the webpage funadvisor.cz you can find many sports activities in surrounding.
For example here are some of your opportunities:
Theater with revolving auditorium