Abstract Thursday - Squares in Architecture

Today's theme is "squares in architecture" and while they exist they're outnumbered by the rectangles! There're a few here though... I couldn't bring myself to do a straight out of the camera shot, quite, but if it were an old camera...? And I've ticked the bonus box for a circle too - well, as near circular as the squares in the gate...

The challenges are always... challenging, and AT64 was no different. This is in fact a decorative entrance pillar into a housing estate a few miles away from me. Thanks to youoregon1 for the theme.