You can get better detail in the daylight. Here’s a closeup of one of the cones pictured in my last post.

It’s really rather peculiar. Not only is there a ladder going down inside, notice the wire wrapping around the top of the cone and the two antennae sticking up.
For the truly obsessed, I’ve posted a few more photos of this area after the fold. But what we saw across the street was an entirely different sort of strange. I’ll post those photos next. – Flyss
Here’s another view of the huge, apparently abandoned, but fenced off and guarded building.
Another view of the cones in relationship to the building:
And another:





those cylinders look like it’s air ventilation for an underground railway/road or sewage drains.
Or it could be scrubbers…
What are scrubbers?