I checked out Natural Earth Data.
It includes the following datasets:
CULTURAL VECTOR DATA (85 MB total in size for download at 1:10,000,000 scale)
Disputed areas and breakaway regions
First order admin (provinces, departments, states, etc.)
Populated places – point symbols with name attributes.
Urban polygons – derived from 2002-2003 MODIS satellite data.
Parks and protected areas – US National Park Service units.
Pacific nation groupings – boxes for keeping these far-flung islands tidy.
Water boundary indicators – partial selection of key 200-mile nautical limits, plus some disputed, treaty, and median lines.
PHYSICAL VECTOR DATA (38 MB total in size for download at 1:10,000,000 scale)
Physical region features
Rivers and Lake Centerlines
Antarctic ice shelves
Bathymetry – nested polygons at 0, -200, -1,000, -2,000, -3,000, -4,000, -5,000, -6,000, -7,000, -8,000, -9,000,and -10,000 meters. Created from SRTM Plus.
Geographic lines – Polar circles, tropical circles, equator, and International Date Line.
Graticules – 1-, 5-, 10-, 15-, 20-, and 30-degree increments. Includes WGS84 bounding box.
RASTER DATA (each dataset 25 MB to 378 MB in size for download at 1:10,000,000 scale)
Cross Blended Hypsometric Tints – Shaded relief combined with custom elevation colors based on climate—lowlands in humid areas are green and arid regions are brown.
Natural Earth 1 – Satellite-derived land cover data and shaded relief presented with a light, natural palette suitable for making thematic and reference maps.
Natural Earth 2 – This data derived from Natural Earth 1 portrays the world environment in an idealized manner with little human influence.
Ocean Bottom– Blended depth colors and relief shading of the ocean bottom derived from CleanTOPO2 data.
Bathymetry – Rasterized ocean depth polygons in a layered Photoshop file that you can manipulate for color and then save a GeoTIF to use with the provided TFW world file.
Shaded Relief – Grayscale shaded relief of land areas only derived from downsampled SRTM Plus elevation data clipped to Natural Earth vector coastlines. A flat gray tint occupies water areas.