What is the fine-grained topic of the following text: You can visit, for example: Schwarzenberg canal (technical monument of UNESCO), the confluence of the Vltava, Plechy 1380 m, Plesne lake, stone sea, mountain Smrcina with future ski slopes, Tristolicnik, Lipno, "Jelenske" valley, monument of Schiftler, forest Boubin, town Lenora, Cesky Krumlov (UNESCO), as well as many castles. Only return the topic.
Tourist Attractions in the Czech Republic