Visit the Czech longest river Vltava. Or her not much shorter sister.
The best way to get down the Vltava is by boat or raft. Go to South Bohemia and experience the Czech paddle boating and timber rafting phenomena for yourself. Timber rafting has even made it onto the UNESCO list! As well as the Třeboň fishponds, which are dominated by the largest pond in the world. Ahoy in South Bohemia!