DC government has just created and released the DC Guide:
http://about.dc.gov/index.asp a GIS-enabled search engine to find much of one might want to know about Washington DC.
http://citizenatlas.dc.gov/atlasapps/findit.aspx Find It Locate businesses, consumer organizations, and government services.
http://citizenatlas.dc.gov/atlasapps/reporthometab.aspx Where You Live Find out about DC neighborhoods, wards, and school districts.
Included is the taxicab fare calculator: http://citizenatlas.dc.gov/atlasapps/taxifare.aspx
Also, a bird's eye view of the Mall area: http://birdseye.octo.dc.gov/
Downtown Birds-Eye Tour Welcome to DC.Gov's interactive map of downtown
Find monuments, museums, and other points of interest. Click on an icon for photos and information.
http://citizenatlas.dc.gov/atlasapps/itinerary.aspx Get There Use the trip planner to find your way from point to point in DC.
Note: Do not use this site for finding real property; the database was not correctly loaded into the application; rather go here: Real Property Tax Database Search not a mapping site but it can be counted on to contain the correct information
http://citizenatlas.dc.gov/atlasapps/custommapsearch.aspx Make a Map Create a map that highlights the DC places that are important to you.
Data available includes historic districts and landmarks, and points of interest: Cemetery (19) Embassy (173) Landmark (383) Landmarks Area (31) Memorial (121) Misc. (59) Monument (2) Museum (75) Performing Arts Venue (20) Place of Worship (903) Sports Venue (1) Statue (73) A map gallery:
http://about.dc.gov/index_map.asp includes PDF frequently requested maps.
Matthew Gilmore, November 2003