Each of the antennae are 25 meters in diameter and weigh 230 tons. The VLA is operated by Associated Universities, Incorporated for the National Science Foundation as the National Radio Astronomy Observatory. But it is occasionally used for tracking satellites and studying the weather. At its most sensitive, it can see a golf ball 100 miles away, but that's not a very good way to get them to notice you. A better way is to knock on their door.
Directions are on their web site.
The public is welcome.