Enterprise Wiki template is unavailable when you create a new SharePoint subsite

You have a Microsoft SharePoint site collection. When you try to create a new subsite, you notice that the Enterprise Wiki template is not available as an option.

To resolve this issue, turn on the Publishing feature at the site collection level. To do this, follow these steps:

1. On the Site Actions or Settings menu (depending on your version of SharePoint), point to Site Settings, and then click Modify All Site Settings.
   
   Note If you do not see additional items when you point to Site Settings, click Site Settings.
2. If you are not at the root of your site, under Site Collection Administration, click Go to top level site settings.
3. On the Site Settings page, under Site Collection Administration, click Site collection features.
4. On the Site Collection Features page, next to Office SharePoint Server Publishing Infrastructure or SharePoint Server Publishing Infrastructure (depending on your version of SharePoint), click Activate.