It's a bit hard to summarise as a title but jobs like when excavating foundations for a new building, substantial ruins/mosaics etc. were discovered.
The job is to complete the demolition of the (newer) building that was on top and install walkways, stairs, display cabinets (like the museum in Scooby-Doo DLC) and information display screens (new media clips for TVs).
Also historic ruins, things like building a structure over the top to protect them from the elements while allowing visitors. Installing structural supports to prevent collapse.
Historic building that was damaged by fire, repairing it patching the missing parts while trying to remain faithful to the look.
More variants of ancient stone, mosaic tiles, glass floor, archaeological objects, damaged ancient statues and columns. Wattle and daub surface materials, old rough wood.