Niagara. Dixon crossing Niagara on a 7/8 inch wire.
On September 6th 1890, Samuel Dixon crossed the Niagara River gorge using a rope with a diameter measuring 7/8 of an inch. This rope was stretched across the gorge over the wildest part of the Whirlpool Rapids. On the return he added more suspense by lying on the rope with the pole resting on his chest, standing on one foot and by hanging from the rope with one hand.