I enjoyed the time I was in the St Louis Arch and a client called asking about a change to a website. I told him I would get to it when I could & after getting off the call I realized I could from my phone. In moments, from the top of the St Louis Arch I had the site adjusted & an email off to him.
Now that I am a Stay At Home Dad, the ability to work where I am is even more important, but to do so you have to go through some steps.
This post on Stay At Home CEO titled Location Independence goes into three parts: Plans, Tools, Ability
They are not complex steps, but vital if you want to have more freedom and liberty in your life.