I'm in New York for almost another full week yet, and TheBloke (TM), has made good on his promise/threat to build a fort.
The worrying emailed updates from him started the day after I arrived in Manhattan.
Some of the cardboard boxes I've collected are very flimsy and struggle to support any sizeable weight.
The cement under the grass limits my support beams.
The ladder will need thicker wood.
To be continued...