Houston was a city in the state of Texas. The mission control for the Bowie Base One mission was located in Houston. (TV: The Waters of Mars)
Location information
Loading map...
{"minzoom":false,"maxzoom":false,"mappingservice":"leaflet","width":"300px","height":"200px","centre":false,"title":"","label":"","icon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"zoom":6,"defzoom":14,"layers":["OpenStreetMap"],"image layers":[],"overlays":[],"resizable":false,"fullscreen":false,"scrollwheelzoom":true,"cluster":false,"clustermaxzoom":20,"clusterzoomonclick":true,"clustermaxradius":80,"clusterspiderfy":true,"geojson":"","clicktarget":"","imageLayers":[],"locations":[{"text":"","title":"","link":"","lat":29.7589382,"lon":-95.3676974,"icon":""}],"imageoverlays":null}
Though it's possible that a real world location doesn't exist in the same geographic space in the Doctor Who universe, such cases are few and far between. Thus, the map to the right is probably a good indicator of the DWU location of Houston.