It seems that any Carpenter "pilgrimage" would have to include the former A&M Studios in Hollywood which is now the Henson Recording Studios. I looked on their website and didn't see any mention of "tours". Does anyone know if they would accommodate fans that would like to tour their facility? That would tie-in nicely if fans wanted to see their star on the "Walk of Fame" also.
I used to know someone who worked there a number of years ago and will check to see if they are still there. But I would not get my hopes up too high that it will be possible to view the interior of the recording studio building. As far as I know, the studio is almost constantly booked.