The ABC has a fascinating story of the Noel Butlin Archives at ANU which is built into the space we know of as the Parkes Way tunnel:
More than 30 years ago a hidden bunker was constructed above the Parkes Way tunnel on the Australian National University (ANU) campus.
ANU archivist Maggie Shapley says the two-storey structure disguised inside the hill includes the Noel Butlin Archives Centre.
“There’s 20 kilometres of records in that structure so that is certainly something to think about when you are driving through,” she said.
“It might look like a very utilitarian building but it in fact holds some of Australia’s historic treasures.”