Railfan Sites in Washington, DC
A self-guiding railfan tour
Railfan, railfan--where do you see trains in Washington, DC? Well, why not take a tour? The Frograil CSX East Coast Tour slices right thru Washington, so all sites included within the tour are highlighted with a [CSX-E] annotation. Click on the site, and you'll be taken right to the tour.
Mapwork: If you're going to be looking for railfan locations, you'll need an industrial strength map resource. I definitely recommend you get a DeLorme Atlas & Gazetteer, study it before your trip, and copy pertinent pages for your field work. You can find information here about Railfan Maps that are available.