Martin Smith was asking about the model I used as the stronghold in my most recent game, so I thought I'd do a quick post on it since he's not the first person to ask.
Many years ago, before I lived in Australia, I lived in close proximity to Heathrow Airport. So local car-boot sales often had odd bits of airline merchandising in them. And that's where I found these:
The first one, and one that sees the most use in games is the Sharjah Souk - essentially a large modern shopping mall. It makes a great general-purpose stronghold, and has also featured in my giant monster games.