Does the feeling ever sneak up on you -- the desire to just get away, break out of your routine, see something new? I always love to travel, but lately I've wanted to head somewhere out of the way and explore. Growing up, my family always took a big trip in the summer, and I would spend months looking forward to it. Maybe that tradition is still in me.
In any case, these vintage U.S. Parks posters from the 1930s struck a chord. Don't they inspire you to trek across the country and see for yourself all the beauty it contains?
Photos from here.