These look to me like really nice stock photographs. The strong converging lines and sense of perspective in three of them seem like they're trying to accomplish or communicate something, but without anything to communicate. I feel like they'd work well behind an ad or something, something that will lean on those strong converging lines and the other themes.
The forest scene with the path and the sun light through the leaves is pretty but ultimately strikes me as very well executed decor, and not a lot else. Again, it might well work as a stock photo supporting something else, but it's not as.. dramatically communicative as the other three potentially are.