There seems to be vignettes on most of the shots. Also, you can mess with color and contrast in Curves. You can also open a Selective Color adjustment layer and lower the black slider for specific colors which help to reduce the deep vibrant color and give the colors more of a washed out look. You can also use a Color Balance Adjustment layer to tweak colors and give a slight color cast, as well as a Filter Adjustment Layer. There are a million ways to get to roughly the same point, you just have to tinker with it. There is most likely some sort of contrast adjustment after the color is achieved because the images seem to have a heavy contrast, but a lower color contrast. If manipulating the colors in RGB, you are going to inadvertently mess up the luminosity as well. You could work in LAB mode to avoid this, but you could probably just throw a Contrast adjustment layer as the last step and bump the contrast slightly.
Thats just off the top of my head and it should get you pointed in the right direction.