NYC Open Data
NYC open data repository, distributing geospatial and tabular data. Download links to datasets are available by clicking on the red About button on the far right of the data view and scrolling down to the Attachments section.
INFRASTRUCTURE
China Digital Maps
Other layers not described also include:Danger points; Sand; Mudflat; Provinces; Prefectures; Counties; 2, 3, and 4 digit postal codes; extraction areas and points, Great Wall of China, dams; islands
Atlas nacional de España 1955-1985
Digital atlas of Spain containing scanned thematic and topographic maps of Spain and major Spanish cities. Plates can be viewed in application or saved as JPGs. Text in Spanish.
City of London GIS data
GIS datasets and CAD files representing assessment parcels, streets, contours, and topographic features. Also includes orthorectified aerial image of entire city.
geoOttawa
Online mapping data for the city of Ottawa
GEORIA Georeferenced Database for Accessing Historical Data
Interactive mapping of infrastructure, Population and Health. Includes historical road network data, sewers, industrial expanse, etc. For online version see http://mercator.geog.utoronto.ca/georia/mapping.htm
Urban Infrastructure and Urban Growth in the Toronto Region 1950s to the 1990s
Digital version of HT 169 C32T69 2003. Contains maps of infrastructure, including sewers.