Recent changes is a MediaWiki feature that lists recent changes in reverse order, with creation date and time, change in the page size, user who created the page, and edit summary. It also provides links to patrol these new edits when that feature is enabled.
You will find this special page her: Special:RecentChanges. See the official documentation for further information.

BlueSpice offers a tag to display and filter recent changes in the content: SmartList.