Check out these image site images:
GoogleEarth_Image Goldstone DSCC
Image by born1945
This satellite image is of the Mars (DSS-14) 70-meter antenna at NASA's Goldstone Deep Space Communications Complex (GDSCC). It's the one at the top. The smaller one at the bottom is the Uranus (DSS-15) 34-meter antenna.
These devises are used to communicate with spacecraft at great distances. The 70-meter dish has the capacity to reach out to the outer reaches of our solar system.
Here is a link to a Google Map of the same area. You can use it to find the other antenna sites at Goldstone. They are located to the south and to the southeast of the above location.
