At Schloss Babelsberg,[54] built for the rather tasteless brother of his own particular patron, later the Emperor William I, he essayed an English sort of castle, admittedly more in the contemporary Picturesque mode of the new Castellated Mansions of Nash and Wyatt than like any real medieval one. This was designed in 1834 and begun in 1835. Persius took it over on Schinkel’s death, redesigning one of the principal towers, and it was finally finished after Persius’s death by Heinrich Strack (1805-80) in 1849. Though certainly not inferior to Smirke’s Eastnor or Cundy’s Hawarden, if without the lovely site and the richly organic composition of Busby’s Gwrych, Babelsberg is better appreciated in Schinkel’s or Persius’s drawings than in actuality. Schloss Kamenz, a rather Tudoresque remodelling of an earlier structure which Schinkel undertook in 1838, is more typical but no more successful. Although playing but a very minor part in Schinkel’s own production, his exercises in the Chalet mode should at least be mentioned. Not only do these illustrate the very wide range of his own eclectic inspiration, considerably wider than that of Durand and the French of the previous generation, they also represent one of the peripheral aspects of his achievement which his pupils, and German architects of the mid century generally, delighted to exploit. The happiest work of his followers, however, continued rather the Italian Villa line of Glienecke and the Court Gardener’s House, a line in which Persius at least all but equalled his master. The Grecian work of Schinkel’s imitators and emulators tended to be overdecorated and lacking in geometrical order while their _Rundbogenstil_ is in general awkwardly proportioned and incoherently ornamented (see Chapter 9). Outside Prussia, such Hamburg architects as Wimmel & Forsmann and de Chateauneuf illustrate better than other North Germans the real possibilities of the _Rundbogenstil_. De Chateauneuf had something of an international reputation, moreover, after winning the second prize in the competition held in 1839-40 for the Royal Exchange in London. His design for that was based on the Loggia dei Lanzi, and may well have provided the suggestion for Gärtner’s Feldherrenhalle in Munich begun the next year.