Approximately 1.5 million people use the Greenwich & Woolwich Foot Tunnels to get from one side of the mighty River Thames to the other. They are, however, somewhat taken for granted. Have you ever stopped to wonder at their existence? They are quite remarkable - there's not much else quite like them in London, let alone the UK. At a time when we're going through an arduous process of trying to work out what London's next crossing will be - thankfully it seems the wonderfully impractical Garden Bridge won't be it - we should take a moment to appreciate how curious and marvellous these two crossings are. Anyway, we had long discussions as to whether the Greenwich & Woolwich Foot Tunnels could be classed as landmarks of South London, considering they largely run underneath the River Thames, all the way to the land beyond the sea (also known as North London.) The debate was swung by the fact that they are known as the Greenwich & Woolwich Foot Tunnels, and thus can be classed as landmark of those areas, which are parts of South London. Case closed. No, you can't appeal the decision, stop asking, we won't tell you again. Without further ado, here is a brief history of the Greenwich & Woolwich Foot Tunnels.