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Welcome to the TopoQuest Map Viewer!
Halcyon House, DC is a building located in District of Columbia County at N38.90594° W77.06776° (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:  N38.90594°  W77.06776°    Datum: NAD83    Zoom: 4m/pixel
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Places Within This Map View:
Place Type Coordinates (click to center)
Halcyon HouseBuildingN38.90594° W77.06776°
Quality HillBuildingN38.90594° W77.06803°
Prospect Learning CenterSchoolN38.90622° W77.06748°
Wormley School (historical)SchoolN38.90594° W77.06720°
Regency RowBuildingN38.90539° W77.06803°
Colonel John Cox HouseBuildingN38.90650° W77.06748°
Forrest-Marbury HouseBuildingN38.90511° W77.06720°
Francis Scott Key MemorialParkN38.90483° W77.06776°
Worthington-Kearney HouseBuildingN38.90567° W77.06887°
Balch HouseBuildingN38.90678° W77.06664°
Cadys Alley Shopping CenterLocaleN38.90490° W77.06660°
Cox's RowBuildingN38.90678° W77.06637°
Prospect HouseBuildingN38.90594° W77.06942°
Morris HouseBuildingN38.90567° W77.06942°
Loyola HallBuildingN38.90611° W77.06944°
Key House (historical)BuildingN38.90511° W77.06942°
Old Holy Trinity ChurchChurchN38.90678° W77.06942°
Goszler-Manogue HouseBuildingN38.90733° W77.06914°
Xavier HallBuildingN38.90583° W77.06972°
East Campus QuadrangleLocaleN38.90611° W77.06972°
Bodisco HouseBuildingN38.90761° W77.06664°
Smith-Bruce HouseBuildingN38.90800° W77.06770°
Anthony Reintzel Building (historical)BuildingN38.90511° W77.06581°
Union Hotel (historical)BuildingN38.90511° W77.06581°
Jackson House (historical)BuildingN38.90511° W77.06581°
Carroll Daly HouseBuildingN38.90761° W77.06914°
Waggaman HouseBuildingN38.90733° W77.06609°
Ryder HallBuildingN38.90583° W77.07000°
Nevils BuildingBuildingN38.90639° W77.07000°
Reckert HouseBuildingN38.90511° W77.06553°
Smith RowBuildingN38.90678° W77.06553°
Convent of MercyChurchN38.90789° W77.06914°
Holy Trinity Catholic ChurchChurchN38.90706° W77.06998°
Holy Trinity SchoolSchoolN38.90713° W77.06995°
Southworth College (historical)BuildingN38.90594° W77.07026°
Walsh BuildingBuildingN38.90611° W77.07028°
Alexandria AqueductCanalN38.90400° W77.06942°
Fire Company Number Five (historical)BuildingN38.90539° W77.06526°
Bank of Columbia (historical)BuildingN38.90539° W77.06526°
Georgetown Town Hall and Mayors Office (historical)BuildingN38.90539° W77.06526°
Bureau of Indian Trade Building (historical)BuildingN38.90539° W77.06526°
Jeremiah Sullivan BuildingBuildingN38.90817° W77.06914°
Car Barn (historical)BuildingN38.90511° W77.07026°
Capital Tradition Company Union Station (historical)LocaleN38.90511° W77.07026°
Georgetown MarketLocaleN38.90483° W77.06526°
Joseph Carlton HouseBuildingN38.90483° W77.06526°
Harnedy Row HousesBuildingN38.90594° W77.07053°
Knaves Disappointment Tract (historical)CivilN38.90567° W77.07053°
Georgetown Market Shopping CenterLocaleN38.90480° W77.06520°
Bussard-Newman HouseBuildingN38.90844° W77.06914°
Gregg HouseBuildingN38.90733° W77.06526°
Holy Trinity TheatreBuildingN38.90733° W77.07053°
Georgetown University ShopsBuildingN38.90639° W77.07083°
Historic Georgetown Grist MillBuildingN38.90372° W77.06553°
Academic AdministrationBuildingN38.90667° W77.07083°
Potomac Boat Club BuildingBuildingN38.90400° W77.07026°
Thomas Parrot HouseBuildingN38.90844° W77.06970°
William Thornton House (historical)BuildingN38.90511° W77.06470°
Saint Johns PreschoolSchoolN38.90750° W77.06500°
Deep Branch (historical)StreamN38.90428° W77.07053°
Saint Johns Episcopal ChurchChurchN38.90761° W77.06498°
Yellow HouseBuildingN38.90872° W77.06609°
Potomac Aqueduct (historical)CanalN38.90289° W77.06914°
Bronaugh-Bibb-Libbey HouseBuildingN38.90900° W77.06914°
Simms-Lihault HouseBuildingN38.90789° W77.07053°
Bomford MillLocaleN38.90400° W77.06498°
Institute of DiplomacyBuildingN38.90750° W77.07083°
Georgetown Preparatory School Monastery South WingBuildingN38.90900° W77.06940°
Buehler-Sullivan HouseBuildingN38.90761° W77.07081°
Georgetown Park Shopping CenterLocaleN38.90483° W77.06442°
Reed Alumni ResidenceBuildingN38.90778° W77.07083°
John Hurley HouseBuildingN38.90789° W77.07081°
Historic Georgetown Town HallBuildingN38.90511° W77.06414°
Thomas Cramphin BuildingBuildingN38.90511° W77.06414°
Alexander Melville Bell HouseBuildingN38.90956° W77.06859°

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)

Zoom level:
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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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