▁dated , ▁frequently ▁by ▁month , ▁between ▁ 1 6 6 4 ▁and ▁ 1 6 6 6 ▁and ▁convey ▁a ▁picture ▁of ▁a ▁busy ▁living ▁city ▁filled ▁with ▁ru ins . ▁ ▁This ▁was ▁a ▁change ▁from ▁the ▁more ▁st aged ▁approach ▁of ▁classic izing ▁pain ters . ▁The ▁pan or am ic ▁settings ▁of ▁the ▁draw ings ▁and ▁the ▁precise ▁technique ▁are ▁believed ▁to ▁have ▁set ▁a ▁standard ▁for ▁ved uta ▁design ers ▁and ▁pain ters ▁after ▁him ▁such ▁as ▁the ▁Dutch man ▁Gas par ▁van ▁W ittel . ▁He ▁also ▁had ▁a ▁subt le ▁influence ▁on ▁Giovanni ▁Batt ista ▁Fal da ' s ▁eng rav ings ▁of ▁contemporary ▁and ▁ant ique ▁structures ▁in ▁Rome . ▁ ▁Cru yl ' s ▁draw ings ▁dep ict ▁the ▁top ographical ▁aspects ▁of ▁the ▁urban ▁landscape . ▁He ▁preferred ▁unusual ▁and ▁complex ▁pers pect ives ▁which ▁reflect ▁the ▁scientific ▁construction ▁of ▁his ▁draw ings . ▁His ▁draw ings ▁re construct ▁the ▁city ▁an ew ▁according ▁to ▁a ▁specific ▁a est h etic ▁taste ▁and ▁gu idel ines ▁of ▁a ▁graph ic ▁structure . ▁Rome ' s ▁city s cape ▁was ▁under going ▁significant ▁changes ▁at ▁the ▁time ▁because ▁of ▁the ▁extensive ▁building ▁works ▁promoted ▁by ▁po pe ▁Alexander ▁VII ▁to ▁enh ance ▁the ▁dign ity ▁of ▁Rome ▁and ▁himself ▁as ▁the ▁Head ▁of ▁the ▁Catholic ▁Church . ▁Cru yl ' s ▁draw ings ▁with ▁their ▁ideal ised ▁view ▁of ▁Rome ▁can ▁to ▁a ▁certain ▁extent ▁be ▁regarded ▁as ▁propag anda ▁for ▁po pe ▁Pope