Beautiful thoughts here about modern architecture…
Rome’s Colosseum Was Once a Wild, Tangled Garden – The Atlantic:
Plants growing today in the Colosseum include very rare species like Asphodelus fistulosus and Sedum dasyphyllum, which scientists believe can only survive when sheltered by the arena, a sanctuary from the urban environment outside. Due to increased pollution and the rising temperature of the city, the flora inside the ruined walls are beginning to change: Plants suited to a warmer and more arid climate are beginning to proliferate at the expense of those more used to cool and damp.