Talk:List of entertainment events held at Helsinki Halli

External links modified
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I have just modified one external link on List of entertainment events held at the Hartwall Arena. Please take a moment to review my edit. If you have any questions, or need the bot to ignore the links, or the page altogether, please visit this simple FaQ for additional information. I made the following changes:
 * Added archive https://web.archive.org/web/20161004081448/http://www.katyperry.com/news/prismatic-world-tour-european-tour-dates-announced/ to http://www.katyperry.com/news/prismatic-world-tour-european-tour-dates-announced/

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Cheers.— InternetArchiveBot  (Report bug) 04:20, 30 December 2017 (UTC)