Parrot City is one of my all time favorite Mars anomalies. I have some pics of it up on my website, but it's time to update it soon. This feature looks to be having a resurgence. George Haas' new book devotes a chapter to it, Joseph Skipper finally put it up on his site, and Keith Laney just revealed that a previously unknown, and higher resolution MOC image of it has been dumped on the PDS.
This is a link to the Parrot City feature on my website:
Some of the smaller features among the perpendicular complex of criss-crossing lines seem to fit an artificiality explanation better than a geologically based explanation.
Take a look at the feature I've marked in blue below. I believe it to be an upright structure because it is throwing a shadow (to the left). A closer look at the front of it shows that this structure has smaller criss-crossing perpendicular lines on the wall facing us.
It looks very much like a strongly structured building in ruins.