What is the largest model you have made

Question: What is the largest model you have made
- Keywords:
  largest model,
  model
Asked by 684sptm52 to Guy on 8 Mar 2018.
- Guy Rixon answered on 8 Mar 2018:
  
  The biggest was a cardboard model of the Roman palace at Fishbourne (https://en.wikipedia.org/wiki/Fishbourne_Roman_Palace). I made this when I was about 10 (IIRC) as a foyer exhibit for a show at the theatre where my father worked.
  
  Nowadays, when I make models, I don’t make large ones but I try to make them as accurate and finely-detailed as possible. The models of trains I build are less than 30cm long.

Question: What is the largest model you have made