Read our guide to the best outdoor art installations to stumble upon or seek out ... time can be directly experienced’, playing into the tradition of American landscape art that began in the 1960s.

Landscape installations and performances at the main Russian land art festival - in photo gallery by TASS.

Found at remote sites around the world are gigantic art installations meant to blur the lines between landscape and sculpture. Take a tour of some of the planet’s most popular Earth art.