There are relatively small stripping draglines that are much larger than this. Big Brutus, the museum shovel makes two of this, at least, and it wasn't near the largest, when in operation. Some wheel excavators make this look like a toy. You might want to rethink your title. I will say these are good sized and good looking machines, though.
Nope the huge wheel loading bucket mining machines are the largest machines ,then the nasa shuttle crawler machine. Big muskie,big brutus,the silver spade .All much bigger than this beast.