Looks like a Mosque in the lower left of the day time photo.
With a pretty serious fence?
Doesn’t look like a mosque to me, but it could be an Eastern Orthodox church.
That’s Duncan Hunter’s border fence I do believe.
Its the one open border RINOs pose in front of when they want to convince voters they’re tough on illegal aliens.
If that’s Mexico, then it’s almost certainly a *really* old cathedral, built anywhere between the seventeenth and nineteenth centuries....
RE: blinking radio masts:
There’s a mast-farm not too far from where I live; in Cedar Hill, most of the local radio (and TV?) stations transmit from this area.