Today I read 100 Most Indestructible Things On The Planet. My favorite indestructible structure was Graphene . Like diamond,Graphene is made of the element Carbon,but it’s a different shape.It is made off incredibly thin layers[about one millionth of the width of a humans hair]because it is only one single atom thick.It’s so thin that scientists only managed to collect and study it close up as recently as 2004 .Graphene is the strongest materiel ever discovered.It’s about 200 times stronger than steel.If I had to rate this from 1 to 5,I would rate it a 6.