Land art is an art movement in which the landscape and the work of art are linked. It is also an art form that is created in nature, using natural materials. Christo and Jeanne-Claude were a couple who made illegal art in the street of Paris in 1962 to protest against the Berlin Wall. In 1972, and 1976 they made land art in the desert of California, building a very long fence. In 1985, they made a huge work in Paris. They wrapped the oldest bridge of the city with polyamide fabric. They had to negotiate for years to have the permission of doing it. So it was official but it was controversial.