Abramović and Ulay made art symbiotically for twelve nomadic years, from 1976 to 1988. […] On March 30, 1998, they embarked on their last performance. She started walking the Great Wall of China from the east, where it rises in the mountains, and Ulay set off from the west, where it ends in the desert. After three months, and thousands of miles, they met in the middle, and said goodbye.

Judith Thurman, “Walking Through Walls”