Craiglea Quarry near Perth.
Worked for slate since the late 1600's. It's system of levels and tunnels, unique in Scotland, could all be scheduled as an industrial monument.
|Wade Bridge at Aberfeldy. Designed by William Adam in 1733 for the ordnance, to the order of Lt. General George Wade. It is both a scheduled monument and a Category A listed building.
Note the centre arch (detail) , framed in quoined cutwaters (detail) and tall obelisks (detail) .