If you call Lockheed these days, they will say the Skunkworks division was officially closed. In fact they had some offsite administration offices that were closed a few years ago. However they repaint the skunks on the sides of the hangers every year. I have a friend there who is an engineer designing new supersonic aircraft.
http://www.cityofpalmdale.org/airpark/
I understand many of the aircraft at the park had been standing derelict out at Edwards AFB for many years. Which probably explains why there isn't an F-4 or A-10 on display.
Hehe... I have a notebook of all the planes that my Grandfather worked on and helped design through the 50s and 60s. He was one of the Airforce contractors who oversaw the production at Plant 42 in those years so he had access to the Lockheed, Northrup and McDonnell Douglas areas of the plant. One of the highlights of his career was watching the brief flight of the YB-49 project. The first flying wing.
Lancaster is focusing on their
Aerospace Walk of Honor project but has several static display aircraft around the city.