Vector Map (VMap) Level 0 is an updated and improved version of the National Imagery and Mapping Agency's (NIMA) Digital Chart of the World (DCW®). The VMap Level 0 database provides worldwide coverage of vector-based geospatial data which can be viewed at 1:1,000,000 scale
Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) GDEM is an easy-to-use, highly accurate DEM covering all the land on earth, and available to all users regardless of size or location of their target areas. Anyone can easily use the ASTER GDEM to display a bird's-eye-view map or run a flight simulation, and this should realize visually sophisticated maps.
Registration Required. European Space Agency’s client for Earth Observation Catalog and Ordering Services. A bit dated. Select the scene you want to download, and click the order button (shopping cart).