Screenshots taken from Flightgear / osgEarth version:
(ref: viewtopic.php?f=6&t=21351&p=194334#p194334)
KSFO runway 10L with native Flightgear terrain
KSFO runway 10L osgEarth enabled, source = ArcGis
KSFO runway 10L osgEarth enabled, source = HiRes NAIP
KSFO runway 10L osgEarth enabled, source = MapQuest Open Aerial
KDCA approach
KDCA crossing Potomac, source = ArcGis
KDCA parallel to runway 330, source = ArcGis
KSFO, airport structures from KML, with AI scenario
KSFO AI takeoff, source = NAIP Hi-res
KSFO approach, source = NAIP Hi-res
KSFO approach lights KML, source = NAIP Hi-res
KSFO AI scenario, airport KML, source = NAIP Hi-res
KSFO - taxiway, source = NAIP Hi-res
Street Maps enabled
San Francisco looking toward KSFO, source = NAIP Hires
Alcatraz
3M5 Moontown grass airstrip, source = ArcGis
Terra Firma from on high, source = ArcGis
KSFO - taxi near the big boys (source = NAIP Hi-res)
LOWI - excessive field of view (source = ArcGis)