In July 2003 I took a vacation to Great Britain and Iceland. During an 8-day stay in London I decided to take the train to Paris for a day. My goal was to see all the major sites, and I only had about 6 hours to do so. My 12-mile walk covered all the sites pictured and more.

Mark Wasson, http://www.markwasson.com > Trips has detailed summaries of my trips