Honorable mentions:
The contrast of this tower with the evening sky is eye-catching.
Not exactly towers, but close enough. Like the pink lighting and sharpness of this nocturnal image.
A classic composition with lines leading to the central topic: a tower
3rd place:
A classic towerscape, nicely captured.
2nd place:
Funky lines, but clearly recognizable as a tower. Very cool distortive effect.
Winner:
Lots of towers and a spectacular ribbon of moving cars below.... This composition has it all: the sky, the buildings and the freeway come together as terrific photo.