Both cool shots. The theme fits B/W but I like the colors too. Nice job.
In their own little ways both work for me. Put together like this I would go for #1.
Mono for me as well. In the first, I see the place. In the second, I see the colour.
With one eye i like the color and with the other i like the mono; they convey two moods-that of activity and abandonment.... they don't render them for a comparison for me