The (almost) winter solstice sunrise, looking along the length of Winter Street.
For more, see The Autumnal Equinox: West Street, or Portlandhenge Returns, or this post on Cityhenges in general.
As a side note, how would you answer the following mathematical problem?
Let E(x) be the function of Embarrassment, and let A(y) be the function of Awesomeness. Fill in the blank:
A(Portlandhenge) _____ E(Publishing a photo of your grimy windows)  +  E(Publishing a photo that you took five minutes after waking up in a 45-degree apartment, and is so poorly composed that an amorous tryst between a digital camera and a snapping turtle would have produced a better result)
As you can see, I chose ">".