This is the Barbican Conservatory.
I took Katie to the Barbican because I used to go to school there. It’s basically an enormous bunker? It’s like a self-contained little world of shaped concrete, with walkways through apartment blocks that connect them to the school, museum, theatre, art gallery and this conservatory without ever having to touch the ground below. And it’s in the dead centre of London.
It’s creepy and cool. There you go.