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
Muscle Car
IR Blinx
lightbox venice
Gaevskiy
MSLifeCamPrivacyCover
TangoDeltaDelta
Green Goblin MK3
Jace1969
Towel hanger
Petr Gaube
TLightScene
D_jespersen
Universal cross key
Rvadrichem