> For a German artwork, Time Pyramid, a concrete block will be placed every decade for 1,000 years. It will take 1200 years as the pyramid will have 120 blocks

> For a German artwork, Time Pyramid, a concrete block will be placed every decade for 1,000 years. It will take 1200 years as the pyramid will have 120 blocks in layers of 8x8, 6x6, 4x4, and 2x2 [1]. [1] https://en.wikipedia.org/wiki/Time_Pyramid https://en.wikipedia.org/wiki/Time_Pyramid