Manual:$wgPageCreationLog

Details
Whether to maintain a log of new page creations, which can be viewed at Special:Log/create.

The benefits of the page creation log over Special:Contributions (help) and Special:RecentChanges (help) filtered to page creations are its verbatim memorization of original page names regardless of later renaming, and no time limitation like in Special:RecentChanges.

When set to true (default)...
 * new page creations will be logged and users will be able to access Special:Log/create to see new page creations on your wiki.

When set to false...
 * new page creations will not be logged and Special:Log/create will report "No matching items in log".