Still dealing with serendipity, what are the chances of us discussing bunkers (the local one from World War Two) and the same day WebUrbanist having Bunkers Ours: the safe house is an open & shut case?
The Safe House located just outside Warsaw in Poland, is a shape-shifting, monolithic, urban bunker which adjusts its exterior to meet all your security needs from pesky tool-borrowing neighbours to a full-on zombie apocalypse. It's practically a fortress with an open, spacious interior with a huge living space spread over 2 floors with an adjoining swimming pool annex that's accessed via a neo-medieval retracting drawbridge. Huge, 2.8 metre flush-fitting shutters open up to 180 degrees or lie flat against the walls letting in light and relieving any sense of claustrophobia.
And our local bunker? The concrete bombing observation posts of the Air Navigation & Training School below.