u/Starting_______now

What are some large knotted structures?

The Lucky Knot bridge in Changsha, China looked close at first glance but then I saw that it forks and can't really be classified as a knot. Nothing else I'm finding is even close.

Are the biggest knots out there just sculptures? It seems like a handy person with a field could make a knotted collection of rope bridges without breaking the bank. Incorporate and such and you could sell tickets to mathematically-inclined tourists. I'm not in a position to make this happen and see myself as one of the ticket-buyers in this scenario.