Preeminent national research laboratory, but forge...

Preeminent national research laboratory, but forget about tours unless you have been specifically invited. Very few public access facilities - and the ones that used to exist are being restricted, such as the auditorium. Best to go online to see what PNNL is up to. If you have a specific scientific interest, you might try contacting a researcher at the lab who can arrange a visitor pass. I haven't been back since I retired from PNNL.