which indicates the road that led from the Hellenistic façade in two orders[90] to the stucco façades of Ctesiphon and Ukhaiḍir.[91] At Hatra a building which looks like the Parthian conception of a temple in antis stands in the court of a monumental lîwân palace,[92] but so far as can be judged without excavation the Hellenistic house is conspicuous by its absence. Not only the royal palace (Fig. 10) but also such of the smaller palaces as are known to us through the admirable publication of the Deutsche Orient-Gesellschaft, show a strongly characterized lîwân plan. To the Parthian interpretation of the venerable khilâni scheme the Moslem East has remained unswervingly true. The lîwân, as it is to be seen at Hatra, dominated the fancy of the Sasanian and of the early Mohammadan architects, and it continues to be an indispensable part of the modern house of Damascus or Baghdâd--except indeed the post-modern, which are wretched imitations of the worst European styles, but these are found more often in ultra-civilized Syria than in Mesopotamia. The huge Parthian lîwân was possibly a result of the introduction of the vault. The great hall, in which, no matter what its size, the interior space was unbroken by pier or column, was a setting for princely state which could not be enhanced by any [Illustration: FIG. 10. Hatra palace. (From _Hatra_, by kind permission of the D. Orient-Gesellschaft.)] architectural device. Portico and audience chamber were blended together, and the columns of the one served to enrich the walls which flanked the monumental archway of the other.