The distance from this sentence to your eyes is my sculpture. - Ken Friedman
RO/LU
ROLU, is rosenlof/lucas, a furniture design studio in Minnesota and designed those stunning chairs.
Michael Heizer - Double Negative (1969)

Michael Heizer - Double Negative (1969). The work consists of a long trench in the earth in Moapa Valley, Nevada. It’s 30 feet (9.1 m) wide, 50 feet (15 m) deep, and 1,500 feet (460 m) long, created by the displacement of 240,000 tons of earth.
Pierre Bonnard
French painter Pierre Bonnard (1867-1947) is said to sneak into museums (rumors switch between the Louvre and the Palais du Luxembourg) to retouch his own paintings in search for the ultimate stroke.
Timm Ulrichs - Findling (1978/80)
Timm Ulrichs - Findling (1978/80). 10 hour performance inside a stone.