I like the Promenade so much that I rented an apartment on Columbia Heights with the same view. It's beautiful, it's romantic, it's touching and sad (the empty downtown skyline where the WTC used to be). I'm just kidding about the headline - come and visit, stay a while, enjoy the view. Sunset is by far the most beautiful time.
Pros: Beautiful, Free, Romantic
Cons: No restrooms, Crowded sometimes
more