Have a look at this marvelous procedural scaffolding generator set up in Houdini by Akio Inagaki, a Houdini Artist who specializes primarily in script writing and procedural tools.
According to the creator, the generator works great with both small- and large-scale environments and utilizes instancing, making it perfect for switching between various meshes. Furthermore, the tool enables one to easily tweak and customize the materials in Unreal Engine to achieve the desired look.
To set up the cathedral seen in the renders, the artist utilized Agisoft's Mexico City Metropolitan Cathedral asset, available via the company's Sketchfab.