The Sierra Mountains

Who here knows about the Sierra mountains? Sierra the company in the Sierra
Mountains from what I know of was where Leisure Suit Larry was made
somewhere in the 80's . You have probably seen Sierra's logo of the word
"SIERRA" in front of a picture of the Sierra Mountains.

I have plenty of adventure games made by Sierra

Eg.
Leisure Suit Larry all episodes
Quest For Glory all episodes
Gabriel Knight all 3
Kings Quest all episodes
Phantasmagoria 1
Lighthouse

but I do not know if they or any games are made there anymore. I got this
info if I remember rightly from one of Leisure Suit Larrys making of video
clips. In it, it said that it was made there in the Sierra Mountains because
of peace and quiet and no hassles. What I would like to know is where
exactly is this place in the mountains that Sierra has based themselves, and
if the place of where Leisure Suit Larry was made is still there?

Shaun B.