PERNŠTEJN

You can get to Pernštejn Fortress, 220 km from Prague, by train to Žďár nad Sázavou, from there to Nedvědice and then on foot. 

Or by high-speed train from Prague to Brno, then by train to Nedvědice with a transfer to Tišnov.

Website: www.hrad-pernstejn.cz