All sets come with highly detailed plaster (or ceramic) and lasercut parts.
The parts of sets are combinable and interchangeable, therefor RT-Diorama offers us many different extension sets.
Products available at:
https://www.rt-diorama.de/
https://ak-interactive.com/
https://www.modellbau-koenig.de/
All parts are combinable as seen here
beautifully detailed broken sections are also available
RT-Dioramas 3D printed industrial ladders fit perfectly here as well