Is this open to visitors in december? Can you actually tour all if the museum's located there in december?

The walk in museum and gift shop is closed right now due to covid restrictions but the disc golf course and trails are open for people to enjoy

I believe it's open year round from 7 or 8a.m. till 6ish. But there is so much more too see also along the walking/bike paths that I have recently discovered. Actually payed more attention too the surrounding like a couple bunkers that your alble too walk through, its maybe 1mile from the museum area along the path. Pretty neat

I would definitely call ahead to make sure, maybe get a schedule from the internet.

It should be open year round. You self tour Battery Russell and the Peter Iredale Shipwreck on the beach. The only issue that might arise is if anything gets shut down that would be the visitor center closing first but I imagine the rest would be open.