After having spent the last several weeks in Colorado I finally came to the state border. The funny part was that I had completely forgotten that I was going to be crossing the border today.
There was a big bill board that from a distance I thought was just another advertisement. When I got closer I realized what it was, especially when I turned around and there was a similar sign for entering Colorado. There was a small little turnoff where I was able to stop and take a quick picture, and where a couple of motorcyclists pulled over for a break as well.