Fresh Air Square

Apparently Fresh Air Squares "are modular, portable parklets that replace car parking spaces for a period of one week to a year to improve the local environment and raise awareness about air quality issues.
...King's College London's 'London Air Quality Network' project monitors and analyses the air around the Fresh Air Square, comparing it to other key sites across the capital."
I don't know about all that, but it's pleasingly bright and zig-zaggy.