The Green Cathedral is a landart project designed by artist Marinus Boezem. The installation consists of an artistic planting of Italian poplars that imitates the size and shape of Notre-Dame de Reims cathedral.
The Flevoland Observatorium
Robert Morris is an American sculptor considered one of the founders of minimalism and also an early practitioner of land art. The Flevoland Observatorium that he bult in Netherlands stages a megalithic representation of the passage of time.