This site said we were 439m on the 69th floor. Now, most of the time I take things for granted. Planes can fly thousand of feet in the air, there’s people on the International Space Station, I can send messages in the blink of an eye - my dad tells me when he first moved to the UK he had to schedule a long distance phone call, and it’s all normal.

But last night, as we sat there I felt a little nervous. Not sure why now. Being so high up in this man made structure.