a normal xyz 20mm calibration cube but with a city on the inside —

Founded a normal xyz 20mm calibration cube but with a city on the inside models & stl files for printing
Pegboard system
FerriteGiant
COVID Multipass
Bird2Brain
Checkers
printinghappy
Pool Ladder Holder
Matthew Temkin
Fiery base
ji11x38
USB Solder Iron Stand
Delta Whiskey
Tube Profile System
Jiri Blazek
Crank
Gray Seas
Nikola Tesla
pete_ritchie