Places you'd like to avoid from a tactical perspective, but cannot
The company I work for maintains an off-site server cluster in a co-location facility on the fringes of the city of Orlando. For non-IT geeks, a co-location facility is a place that offers cabinet space for computers with filtered power and redundant internet connections.
Ours is a nice facility, with excellent physical security (always a plus when you have ~$120,000 in hardware living there) on the center itself.
But the entrance to the data center is a different matter. It lives in a windowless back corner of a light industrial / office building, with the only access around the back of the building by the HVAC plant and generators. It is a very bad-guy friendly environment, with convenient hiding spots and lots of cover noise.
I had to go down to the center the other day to swap out a failed hard drive, and following my usual practice I drove past the entire utility "pen" behind the building, then returned to the side closest to the datacenter door and parked.
Every time I go down there, I think through scenarios and how I would respond to a threat while inside the "pen". It has a push button combination lock on the gates, but I've found them left unsecured before, so I have no illusions that the gates will keep anyone out of there. If anything ever happens in the pen area, it's going to be up close and personal - there is just no place to move to create distance in any reasonable timeframe.
It just doesn't give me a warm fuzzy when I go down there....