Chad Callihan confirms that you can see the resource database but only in your peripheral vision:
Can you name each of the system databases in SQL Server?
You might be able to name master, msdb, model, and tempdb. What about the fifth system database? Don’t feel bad if you’re drawing a blank.
The fifth system database is the Resource database. Even if you’ve never heard of the Resource database, chances are that you’ve used it. Let’s discuss how that can be.
Click through to learn what the resource DB is and why you typically won’t see it.