/sitecore/admin/cache.aspx
Out of the box cache view. Recommend replacing with https://marketplace.sitecore.net/en/Modules/Sitecore_Cache_Admin.aspx if possible.
/sitecore/admin/stats.aspx
Displays renderings with usage and caching information.
/sitecore/admin/showconfig.aspx
Final config after all files are compiled together.