adobe photoshop - How to add readable text to a light and dark image?

I'm trying to add text to a photo of a city but the colors in the background make it difficult to read light and dark text. I've tried several light and dark colors but they all looked overpowered by the colors in the image. What colors could I use or what can I do to the text to make it show but also make it so you can still see the background?

Here is the image I'm trying to use: http://getwallpapers.com/wallpaper/full/3/e/b/151308.jpg