Despite the troublous times of the two Ottokars and of Wenceslaus I, the city of Prague, or rather the communities composing it, had expanded into a place of considerable extent and importance, and was already spoken of as the City of many Towers. The three above-mentioned sovereigns, as also Wenceslaus II, son and successor of Ottokar II, had found time and means to do a considerable amount of building of which some traces are still evident. We have already noted that Wenceslaus I girt the Old Town around with walls, likewise the hill of Vyšehrad, and he took the strengthening of the Hradšany in hand. This latter job was completed for the time being by Ottokar II, who caused those imposing-looking towers on the north front of the castle to be built. These towers are named respectively Black Tower, White Tower, and Daliborka, by which latter hangs a tale which I will relate to you by and by. Some of the authorities I have consulted differ as to the actual date of these towers, and are inclined to place the building of Daliborka in the fourteenth century, probably into the period when Charles IV found the royal castle to be badly in need of repair and set about the work forthwith. It is certain, however, that both the Wenceslaus and Ottokars interested themselves in strengthening the fortifications of Prague, and are not likely to have neglected the Hradšany, which stronghold was furnished with a permanent garrison of ten knights and three hundred men-at-arms. The north side of the castle has preserved the mediæval appearance which has been improved away on the other sides, chiefly by fatuous Habsburger in the seventeenth and eighteenth centuries; the north side overhanging the deep-cut Stags' Moat shows you the formidable nature of this fortress with its stout towers rising up over the tops of tall trees that struggle up out of the valley mentioned by Libuša, for a glimpse of the sun. The towers of the Hradšany were suitably fitted out as dungeons, with the latest thing in trap-doors warranted to give the visitor a sudden and complete change of air. One of these towers soon found a lodger, one Dalibor after whom the tower was named for ever after. There is an opera all about Dalibor composed by Smetana; the music is very beautiful, but as the singing is all in Czech, I have not quite got the hang of the story, so will give as nearly as I can and by the aid of my own imagination, what happened to Dalibor.