If you like walking or hiking or climbing then the Sächsische Schweiz is the right area to be.
A very good place to set off from is the Zahnsgrund with the Schrammsteinbaude (a hotel and restaurant which offers good accomodation and good meals).
From here you have many possibilties to explore the area. The valley you reach by leaving the B 172 (Elbe road) east of Schandau and turn north into the side valley of the Elbe.
The photos will give you a good impression of what you have to expect.
Exciting places are the Falkenstein, Schrammsteine, Müllerstein, Affensteine and the Kuhstall. There are many scenic and exciting pathes with wonderful climbs and views to explore.