[iciac]

As a related Adelaide fact - the center of town is ringed by a "moat" of parklands, each ostensibly the width of a cannonball and designed as a defensive structure (an invading force would need to run through a cannon's worth of artillary). On a map the green square is extremely distinctive https://en.wikipedia.org/wiki/Adelaide_Park_Lands#/media/Fil...

[22c]

Not the width of cannonball, but perhaps made wide enough such that you could not fire a cannonball from a cannon at the city without having to move across open land.

I'm not sure if that's an urban legend though. I can't find any references to that line of reasoning in historic recounts of Colonel Light's initial plans for Adelaide.

[lostlogin]

I was trying to imagine a park that narrow that ringed a city, I get it now.

[progre]

The park was designed by Bergholt Stuttley Johnson

[plantain]

It's just not true. A myth that doesn't make any sense if you consider it. If you think artillery/cannon's couldn't shoot a mile, I'll sell you the Torrens Footbridge.

https://www.adelaide-parklands.asn.au/fiction-facts

[woozyolliew]

That website made me feel sad; seems they’re embattled, and really have a fight on their hands to stop the parkland turning into suburban parking and retail

[xarope]

I spent a lot of time having lunch by the banks of the Torrens, and rowing 4s and 8s on the river. Would be sad to see the banks overrun by buildings (ala hawaii beaches), public access or not.