This post is a little different from the usual here, but it is so different I thought I would share it with you...
Below is a YouTube video that was shared with me recently of Knuffingen Airport, claiming to be the world's largest model airport/ railway. Apparently, it is built at a 100:1 scale and is pretty much fully functioning... yep!
The video only shows the airport part of the model, so I'd be at a loss to guess how big the entire place is!
This link [click here] is to the news article where I first saw this, with the video embedded below.