Prague, the capital with its incredible historic center and famous monuments such as the Astronomical Clock, Charles Bridge, and Prague Castle. Member of the UNESCO World Heritage list.
Olomouc, a vibrant university town with the second largest historic center after Prague. Member of the UNESCO World Heritage list.
Český Krumlov – beautiful city with castle and picturesque downtown. Member of UNESCO World Heritage list.
Kutná Hora – medieval silver mining town contains, except well preserved mining shafts from 14–16th century, a lot of Gothic and Baroque sights. Member of UNESCO World Heritage list.
The Macocha Caves (http://www.moravskykras.n...), north of Brno, are definitely worth a visit. You can take a guided tour into the caves, which will take you through a myriad of winding tunnels, with close up views of stalactites and stalagmites. The tour ends with a boat ride on an underground river.
The Battle of Austerlitz Slavkovské bojiště in Czech – is one of the most important events in the history of Europe in the early 19th century Napoleonic Wars.
Technical museum in Brno nice and modern
Lakes under Pálava hills. This lakes are actually river dams but good for sailing and fishing you must have fishing licence it's full of big fishs.
Mikulčice archaeological site, site of the former capital of the Great Moravian Empire c. 900 AD.