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Welcome to the TopoQuest Map Viewer!
One Northwestern Center, IL is a building located in Cook County at N41.88475° W87.63950° (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:  Chicago Loop, IL    Map MRC: 41087H6
Map Center:  N41.88515°  W87.63993°    Datum: NAD83    Zoom: 4m/pixel

Places Within This Map View:
Place Type Coordinates (click to center)
One Northwestern CenterBuildingN41.88475° W87.63950°
Barnes House (historical)BuildingN41.88448° W87.63978°
River CenterBuildingN41.88392° W87.63950°
Robinsons Trading House (historical)BuildingN41.88642° W87.63922°
Morton International BuildingBuildingN41.88392° W87.63894°
Northwestern Terminal PowerhouseBuildingN41.88614° W87.64116°
Haymarket Post OfficePost OfficeN41.88527° W87.64157°
Chicago Northwestern TerminalBuildingN41.88337° W87.64061°
Blatchford BuildingBuildingN41.88614° W87.64172°
Wolf PointLocaleN41.88698° W87.63894°
Guaries Trading House (historical)BuildingN41.88726° W87.63950°
Elijah Wentworth Tavern (historical)BuildingN41.88753° W87.63978°
The ForksLocaleN41.88670° W87.63811°
Chicago RiverStreamN41.88638° W87.63783°
North Branch Chicago RiverStreamN41.88638° W87.63783°
Keller Graduate School of ManagementSchoolN41.88281° W87.63894°
Randolf-Wacker BuildingBuildingN41.88476° W87.63728°
Northwestern AtriumBuildingN41.88253° W87.64061°
Apollo Hall (historical)BuildingN41.88587° W87.63728°
American Technical InstituteSchoolN41.88253° W87.63894°
Riverside PlazaBuildingN41.88253° W87.63894°
Morton - Norwich BuildingBuildingN41.88364° W87.63755°
Chicago and Northwestern StationLocaleN41.88226° W87.64033°
Fulton HouseBuildingN41.88809° W87.63978°
Millers Tavern (historical)BuildingN41.88726° W87.63783°
WGCI-FM (Chicago)TowerN41.88253° W87.63755°
Civic Opera HouseBuildingN41.88253° W87.63755°
Opera School of ChicagoSchoolN41.88253° W87.63755°
River CottagesBuildingN41.88892° W87.63978°
Gateway Center IBuildingN41.88114° W87.63922°
Wolf Point Apparel CenterBuildingN41.88864° W87.63783°
LaFramboises Store (historical)BuildingN41.88114° W87.63894°
Chicago Harbor LightLocaleN41.88920° W87.64089°
Heller International TowerBuildingN41.88087° W87.64033°
Chicago Mercantile ExchangeBuildingN41.88142° W87.63755°
Southeast Guide Wall LightLocaleN41.88809° W87.63616°
Presidential TowersBuildingN41.88114° W87.64255°
Gateway Center IIBuildingN41.88031° W87.63894°
Staats Theater (historical)BuildingN41.88253° W87.64422°
Orleans PlazaBuildingN41.88976° W87.63755°
Central YMCA Community CollegeSchoolN41.88642° W87.63478°
Kingsburgy PlazaBuildingN41.89003° W87.63755°
Illinois Institute of Technology Downtown CampusSchoolN41.88087° W87.63644°
Engineering BuildingBuildingN41.88642° W87.63450°
United States Dental InstituteSchoolN41.88642° W87.63450°
Hartford BuildingBuildingN41.88003° W87.63755°
Pentecostal Temple Church of God in ChristChurchN41.89059° W87.63839°
Interchange 51BCrossingN41.88448° W87.64561°
Merchandise MartLocaleN41.88837° W87.63505°
Interchange 51ACrossingN41.88587° W87.64589°
Interchange 51CCrossingN41.88309° W87.64561°
Madison PlazaBuildingN41.88226° W87.63450°
Washington BlockBuildingN41.88281° W87.63422°
Assumption Roman Catholic ChurchChurchN41.89031° W87.63644°
Chicago United Westside MissionChurchN41.88087° W87.64450°
Merchandise Mart Post OfficePost OfficeN41.88823° W87.63447°
Trustees System Service BuildingBuildingN41.88614° W87.63366°
Glessner CenterBuildingN41.87948° W87.64283°
Union StationLocaleN41.87864° W87.64033°
Gateway Center IIIBuildingN41.87864° W87.63922°
Steuben ClubBuildingN41.88476° W87.63339°
Interchange 51DCrossingN41.88170° W87.64561°
Mid-America Commodity Exchange BuildingBuildingN41.87837° W87.63922°
Schiller Building (historical)BuildingN41.88476° W87.63311°
State of Illinois BuildingBuildingN41.88476° W87.63311°
Orleans CourtLocaleN41.89087° W87.63616°
Saint Patrick ConventChurchN41.88003° W87.64450°
Chicago-Kent College of LawSchoolN41.87864° W87.64227°
Helene Curtis BuildingBuildingN41.88809° W87.63366°
Builders BuildingBuildingN41.88642° W87.63311°
Reid CollegeSchoolN41.87864° W87.63727°
I Am TempleChurchN41.88337° W87.63311°
Saint Patrick SchoolSchoolN41.87948° W87.64422°
Heitman CenterBuildingN41.88559° W87.63283°
Moser SchoolSchoolN41.88559° W87.63283°

Note: Coordinates listed above are datum selected on the sidebar.
Click on map to:
Zoom In Zoom in (x2)
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Pan Re-center

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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Medium Rare (768x768)
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Extra Grande! (1280x1280)


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

Draw crosshair at center

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, 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 with 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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