A couple of decades ago, a local greenhouse owner approached me. My assignment was to design and build a sign or display that would entice people within a 100-kilometre radius to buy his beautiful flowers. We had created sugar cube castles in our art gallery as Christmas displays in years past, and they were always popular. I reasoned that if I pulled out the stops and built the largest possible castle, it would do the trick. The ceiling of the garden’s interior display space was just over 14 feet tall, which governed the final height. Because it was a public space, I welded up a steel frame, which was hidden inside, then began assembling the sugar cubes, one at a time. I used hot glue to fasten the cubes together. It took four days to complete the task and used more than 14,000 sugar cubes. The castle proved to be very popular and was even featured on national TV. People travelled many miles to get a look, and they did buy some poinsettias!