Visitor's entrance or visitors' entrance

[iklboo]

Which is correct?

Depends entirely on how many visitors you're expecting!

It's a sign on a government building. There's some debate as to which it should be.

Visitor's - one visitor

Visitors' - more than one visitor.

For a Governmental building, the plural seems vastly more likely.

the plural

People have been making me think I'm going potty. Thank you for your replies ladies.

There really shouldn't be a debate on this though, should there? I'm surprised they haven't actually gone for "visitors entrance" - like childrens clothes and mens toilets, et al- when people don't understand where, if at all, the apostrophe goes, they simply leave it out altogether. What's not to get?? Grrrrr!

AND there's a big gap between the 'r' and the 's' like they thought about putting it there. Maybe 'Entrance for Visitors' would have been easier .

They could solve the whole mess by treating visitor as an adjective and just writing "Visitor Entrance".