Running Fence, by Christo e Jeanne-Claude, 1972-76 - in California, USA
Running Fence is 18 feet (5.5 meters) high, 24.5 miles (39.4 kilometers) long, extending east-west near Freeway 101, north of San Francisco, on the private properties of 59 ranchers, following the rolling hills and dropping down to the Pacific Ocean at Bodega Bay.
It was made of 2,152,780 square feet (200,000 square meters) of heavy woven white nylon fabric, hung from a steel cable strung between 2,050 steel poles (each 21 feet/6.4 meters long, 3.5 inch/8.9 cm in diameter) embedded 3 feet (91 centimeters) into the ground, using no concrete and braced laterally with guy wires (90 miles/145 kilometers of steel cable) and 14,000 earth anchors. The top and bottom edges of the 2,050 fabric panels were secured to the upper and lower cables by 350,000 hooks.
It crossed 14 roads and the town of Valley Ford, leaving passage for cars, cattle and wildlife. It was designed to be viewed by following 40 miles (64 kilometers) of public roads, in Sonoma and Marin Counties.
It works as a wall, a thin membrane that divides two spaces. It reminds me the Great Wall of China, although not so rough and heavy.
via Christo e Jeanne Claude