a showing wall - Gintaras Karosas
the non-regular geometry of the Tepe Sialk (c.3000 BCE) - not Sumerian etc. but possibly from a Zayandeh River Culture
rock-cut, stripped, smoke-stained & alcove-riddled interiors of the monastery ruins of Vardzia (ვარძია), Georgia
ruins of the first Islamic university, Harran. c.8th cent. CE
~300 years older than the first Western university
Duga-3 the radioactive remains of the Cold War OTH Radar responsible for the Woodpecker Signal, now rusting away within the Chernobyl exclusive zone.