There's a website which has page URL's such as http://www.example.com/states/new-york/
If I go to http://www.example.com/states/
I get a 404 error.
The site also has http://www.example.com/category/some-category-name/
and http://www.example.com/tag/a-tag/
So clearly they haven't modified their permalink category and tag bases. Or customized them. I'm thinking they created custom page templates and pages who's parent is a a page called states
to get the permalink /states/new-york/
but then why would going to /states/
throw a 404?
Can a link structure like this be created any other way?