I do love bunkers, especially secretive, derelict undiscovered type ones
I'm not quite sure why (mostly) men have some weird atavistic attraction to bunkers, although I suppose it's to do with our combined love of mysterious military hardware, building forts as a child and a desire to find out and own/possess singular places, thus giving us some form of ego-driven edge over other men by allowing us to have the (physical or intellectual) rights to this powerfully unknown place that they know nothing about, unless you give them permission.
The best place to see amazing bunkers is 28DAYSLATER
there's abandoned asylums, warehouses, airfields, bunkers and much more on there!! Love it!