Pic of the Day - Stunningly Invisible

I took this photo with my Canon 30D using a Canon 28-235mm F3.5-5.6 lens in Washington DC.  When I arrived in the city, I took my time to allow the beautiful architecture to sink in.  I believe most visitors ignore the spectacular architecture of the city as a whole; and focus solely on the breathtaking monuments. 

What caught my eye about this building was it's beautiful clock, it's dominance over every other surrounding building, it's color and scale.