St. Vitus Cathedral
One of the most stunning place I have been to globally for sure. You would immediately be amazed by its architecture from the outside and it stands majestically with amazing details all over. After the long cue you realize that you are stepping into something incredible again. It is instantly understood how much effort this country and the former kings/ emperors are into their believes and region. Every corner of the cathedral tell a story of its own and contains amazing details that express mankind intellectual.