There are some one-off tricks you can use to access it, but, as far as I can see, no equivalent of the windows 'show hidden files' setting in Finder.
To see extended attributes (indicated by trailing @), file ACLs (indicated by trailing +), and flags, use this:
$ ls -l@eOd Library/ drwx------@ 38 user group hidden 1292 Dec 28 16:02 Library/ com.apple.FinderInfo 32 0: group:everyone deny delete
You can manipulate the 'hidden' flag (which seems to actually be implemented as a FinderInfo attribute) and others with chflags:
chflags nohidden Library
$ ls -l@eOd Library/ drwx------+ 38 user group - 1292 Dec 28 16:02 Library/ 0: group:everyone deny delete