Tower/Lloyd Beach at Night

Today while biking home from school when it was just starting to get dark out 
I  decided to go out to the pier at Maple Beach to see if
 there'd be anything worth photographing. The lights at the boathouse
 in Lloyd Beach and the tower at Tower Beach reflected

 off the lake so I tried taking some long exposures with 
low apertures to get water blur and to be able to see the tower at

 night. Using a high aperture had a nicer effect- the lights on the water

 were fuzzier and everything was more in focus, but using a low aperture

 made the sky more vibrant. 

Here's when I exposed it for a full 6 seconds:

Winnetka

Taken in November 2011