Mailbox

As per Guinness, officially the largest mailbox is located in Casey, Illinois, USA. However, I have a strong doubt that this one here in Lappeenranta, Finland is bigger. I've been working in that mail sorting centre till 1996-2008, but can't recall anymore the size of the box. There really is a real mailbox and two floor staircase inside the mailbox. I suppose I will get the info from my old buddies as this post is shared to Facebook.