Clue time? You can see two countries here.
Bigger clue is the building. It appears that traffic from that highway can drive under it. That's not typical. It even appears to expand into multiple lanes before the road passes under it. And, based on the way the road flows, it seems as if you can only pass through this building in one direction. Assuming the pic is taken in the evening, and to the north (based on cars in lot, length and direction of shadows), it looks like you really only pass through this thing going from the north to south (unless the pic was taken in the morning). That rules out a rest area, so it's more like a toll station for just one direction, like they have on some bridges.