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Welcome to the TopoQuest Map Viewer!
William Knowles House, DC is a building located in District of Columbia County at N38.90622° W77.05914° (NAD83). This is the nearest place in the USGS place names database to the center of the map view below.  Look below the map view for a list of other places and locations that are visible within this map view.  If you need to locate a landmark or feature, you can search for its location on our Find Places page.  If you need to locate a specific USGS topographic map, try our Find Maps page.



USGS Map Name:  Washington West, DC    Map MRC: 38077H1
Map Center:  N38.90622°  W77.05914°    Datum: NAD83    Zoom: 4m/pixel
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Places Within This Map View:
Place Type Coordinates (click to center)
William Knowles HouseBuildingN38.90622° W77.05914°
Englishs Female Seminary (historical)SchoolN38.90622° W77.05914°
Miss Lydia Englishs Seminary (historical)SchoolN38.90650° W77.05914°
Edes HouseBuildingN38.90650° W77.05914°
Admiral Weaver HouseBuildingN38.90650° W77.05887°
Laird-Dunlop HouseBuildingN38.90678° W77.05914°
Loughborough-Patterson House - Junior LeagueBuildingN38.90567° W77.05942°
Henry Foxall Tenant HouseBuildingN38.90670° W77.05860°
Union Tavern (historical)BuildingN38.90539° W77.05914°
Junior League of WashingtonBuildingN38.90539° W77.05914°
De La Roche-Jewell Tennant HouseBuildingN38.90706° W77.05914°
Wheatley Town HouseBuildingN38.90539° W77.05887°
Colonial ApartmentsBuildingN38.90706° W77.05942°
Riggs-Riley HouseBuildingN38.90650° W77.05998°
Old Stone HouseParkN38.90581° W77.05999°
Miss Lydia Englishs Female Seminary (historical)SchoolN38.90720° W77.05900°
Foxall House (historical)BuildingN38.90678° W77.05831°
Eagle House (historical)BuildingN38.90539° W77.05970°
Francis Wheatley HouseBuildingN38.90539° W77.05970°
Stevens-Billings HousesBuildingN38.90539° W77.05970°
Bridge Street Presbyterian Church (historical)ChurchN38.90511° W77.05914°
Anchor Tavern and Oyster House (historical)BuildingN38.90539° W77.05831°
Beall Burying Ground (historical)CemeteryN38.90706° W77.05998°
John Davidson HouseBuildingN38.90678° W77.05803°
John Williamson HouseBuildingN38.90678° W77.05803°
Birch Undertaker BuildingBuildingN38.90511° W77.05970°
Beatty-Stuart HouseBuildingN38.90750° W77.05900°
Old Stone HouseBuildingN38.90539° W77.06026°
Thomas Beall HouseLocaleN38.90706° W77.06026°
Hyde HouseBuildingN38.90761° W77.05859°
Sea Captains HouseBuildingN38.90539° W77.05776°
Decatur-Gunther HouseBuildingN38.90706° W77.05776°
Beall-Peter-Dick HouseBuildingN38.90706° W77.06053°
Embassy of VenezuelaBuildingN38.90456° W77.05914°
Community HouseBuildingN38.90789° W77.05887°
Henry McCleery HouseBuildingN38.90450° W77.05930°
John Stoddert Haw HouseBuildingN38.90678° W77.05748°
Mount Zion Church ParsonageBuildingN38.90789° W77.05859°
Georgetown Custom House (historical)BuildingN38.90567° W77.06081°
Rock of DumbartonAreaN38.90567° W77.06081°
Hedges and Federal HouseBuildingN38.90460° W77.06000°
Georgetown Post OfficePost OfficeN38.90581° W77.06097°
Intown Play Group Child Development CenterBuildingN38.90800° W77.05840°
Justice William O Douglas StatueParkN38.90428° W77.05914°
Susan Wheeler Decatur HouseBuildingN38.90650° W77.05720°
Thomas Sim Lee CornerBuildingN38.90817° W77.05942°
Adams-Mason HouseBuildingN38.90456° W77.06026°
John Walker HouseBuildingN38.90678° W77.05720°
Morsell HouseBuildingN38.90678° W77.05720°
Customs HouseBuildingN38.90567° W77.06109°
Ross and Getty BuildingBuildingN38.90817° W77.05970°
Kesher Israel Georgetown SynagogueChurchN38.90701° W77.05727°
Christian Science Reading RoomChurchN38.90534° W77.06105°
Mount Zion United Methodist ChurchChurchN38.90817° W77.05831°
Isaac Tenney HouseBuildingN38.90830° W77.05970°
Lock 3DamN38.90407° W77.05944°
Masonic LodgeBuildingN38.90456° W77.06053°
Sims HouseBuildingN38.90511° W77.05720°
Phillips School (historical)SchoolN38.90650° W77.05692°
Carriage HouseBuildingN38.90650° W77.06137°
Corcoran School (historical)SchoolN38.90567° W77.05692°
Mount Zion United Methodist Community HouseBuildingN38.90844° W77.05859°
Crawford-Cassin HouseBuildingN38.90844° W77.05970°
William H Tenney HouseBuildingN38.90844° W77.05970°
Rock of Dumbarton Tract (historical)CivilN38.90500° W77.06111°
Charles S Pryor Fellowship HallBuildingN38.90706° W77.05692°
Lock 2DamN38.90397° W77.05836°
Towpath RowBuildingN38.90428° W77.06053°
Georgetown Baptist ChurchChurchN38.90700° W77.06143°
Fifth Christian Science ChurchChurchN38.90622° W77.06164°
Lock 4DamN38.90411° W77.06049°
Congress Street Methodist Protestant Church (historical)ChurchN38.90594° W77.06164°
Museum of Contemporary Art District of ColumbiaBuildingN38.90456° W77.06109°
Federal HouseBuildingN38.90372° W77.05998°
Thomas Robertson HouseBuildingN38.90539° W77.06164°

Note: Coordinates listed above are datum selected on the sidebar.
Click on map to:
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Map contents:
Choose Automatically
Overall Coverage
1:24K Coverage (US)
1:24K Topo maps (US)
1:50K Coverage (Canada)
1:50K Topo maps (Canada)
1:100K Coverage (US)
1:100K Topo maps (US)
1:250K Coverage (US)
1:250K Topo maps (US)
Satellite 1m Coverage (US)
Satellite 1m (US)

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Map Size:
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Datum:
NAD27
NAD83/WGS84

Coordinate format:
UTM
Nddd.ddd°  Wddd.ddd°
Nddd°mm.m'  Wddd°mm.m'
Nddd°mm' ss"  Wddd° mm' ss"

Draw crosshair at center



Updates
Note (5/31/2016) - Want a crosshair at the center coordinates of the map?  A number of people have asked, so that option has been added!

Note (6/26/2013) - Map sizes are now larger, and an extra-large (1280x1280) option has been added as well.

Note (8/18/2010) - The transition to the new TopoQuest server is now complete.  Aside from a glitch that affected the TopoZone alternative map.asp script much of Monday (8/17/2010) afternoon and evening, all went pretty smoothly.  Response time of the TopoQuest website overall should be much snappier, and addition of more 1m satellite / aerial imagery is back underway!

Note (8/2/2010) - Full USGS 1:100K and 1:250K topographic map coverage of the continental US is now completed and online.  Plus, I have the new TopoQuest server under construction with a 9TB RAID6 disk array to continue adding satellite/aerial photo coverage.  Yay!

Note (7/21/2009) - Locations of places of interest (from the USGS placenames database) within the map area you are viewing are now listed below the map when viewing at 64m/pixel or below.  You can click the name of the place to go to its description page, or click the coordinates to recenter your map view on that place.

Note (6/1/2009) - We've started adding 1m/pixel aerial and satellite imagery, starting with Oregon and slowly branching out from there.  Please be patient, it takes a very long time to download and process all this imagery, as well as huge amounts of disk space!

Note (3/07/2009) - We've started adding 1:100K and 1:250K scale USGS topographic maps, starting with southern Oregon and moving out from there.  Coverage will be a bit sparse at first while we crank up automated processing of map tiles at these topographic map scales.  To view 1:100K and 1:250K scale topos, you'll need to manually select them from the sidebar (the Choose Automatically selection will not select these map scales until we have more coverage).  You can use the coverage map types to see what areas we've already processed and have online.  Also note that satellite photo coverage isn't meant to be particularly useful at this point, it's just (very) experimental.

Note (7/31/2008) - We've started adding 1:50K scale topographic maps of Canada, starting with British Columbia.  The Canadian topographic map coverage is still a bit experimental, and integration into the map viewer still needs a little work.  The map viewer will not yet automatically select the 1:50K scale topographic maps, so if you're trying to view maps in Canada, you may need to manually switch to the 1:50K Topo Maps selection in the Map Contents section of the sidebar.

Note (4/15/2008) - With the demise of non-subscription access to TopoZone (now merged with Trails.com, a subscription service), we're scrambling to process all topographic maps for the US and make them available as quickly as possible.  We now have four Linux PC's crunching map data 24/7 to produce and index map data continuously.  We should be adding approximately fifteen 1 degree x 1 degree blocks of map data (approximately 1000 individual 7.5 minute 1:24000 topo maps) per day.  We're starting with southern Oregon (because that's where we live!) and northern California and branching out from there.

TopoZone URL Replacement
Do you have a Topozone map URL that you want to convert to the TopoQuest equivalent?  Simply replace topozone.com with topoquest.com in the URL, and you'll get the equivalent map as what Topozone used to produce!  We have more details on using TopoQuest as a Topozone alternative on our Topozone Replacement page.



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