Bastion Fort
en.wikipedia.org
en.wikipedia.org
The British commander Sir Francis Rawdon, 1st Marquess of Hastings, relieved the forces there shortly afterwards and abandoned it as part of a general retreat to Charleston.
https://www.nps.gov/nisi/learn/historyculture/the-star-fort....
https://en.wikipedia.org/wiki/Hesco_bastion
Thanks to the wars in Afghanistan the founder got rich enough to buy Segway. Then he drove off a cliff in his Segway ending his life.
Camp Bastion in Afghanistan is a big base that is named after the HESCO Bastions it is made of:
https://en.wikipedia.org/wiki/Camp_Shorabak
There is a surprising amount of money to be made in making containers for rocks, making black plastic bags for refuse and other things where you would not imagine a fortune could be made. As per the HESCO example it is a gruff Northerner with a 'where there is muck there is brass' attitude that inevitably exploits the potential. Shame about the Segway incident though.
https://de.wikipedia.org/wiki/Zitadelle_Spandau (German Wikipedia has nice images)
https://en.wikipedia.org/wiki/Spandau_Citadel (English, pretty short)
PS: It ~400 Years old, had been redesigned into a bastion fort at same point and doubled as a prison later on.
https://en.wikipedia.org/wiki/Forte_Spagnolo,_L%27Aquila
https://it.wikipedia.org/wiki/Forte_spagnolo (the Italian wiki has some additional photos)
You can see this in Google streetview if you go to the car park for visitor access - you can see almost nothing of the enormous fort even though it is only a couple of hundred metres away.
I currently live 10 minutes by bike from a village that still has its star defense structures standing, and there's a nice walking path around part of it. - https://en.wikipedia.org/wiki/IJzendijke#/media/File:IJzendi...
There are also several towns in this country which still have impressive walls and gates. I still admire them when I see them.
Call me a bastion against the ungaming heathens here