The broch is next mentioned in a report by the local Minister in 1797. By this time, brochs were believed to be watchtowers used as defense against, or by, Vikings. Dun Carloway featured prominently in reports on Western Isles brochs in the latter part of the 1800s, and as a result it was one of the very first ancient monuments in Scotland to be taken into state care. By this time a large a part of the wall had been removed, probably for recycling into the blackhouses built nearby: including the one whose walls still stand nearly complete below the access path.
Today Dun Carloway is approached from the car park past the Doune Broch Centre, built largely underground, and containing an exhibition giving a sense of what life in the broch might well have been like. This is run by Urras nan Tursachan, The Standing Stones Trust (as is the nearby Calanais Visitor Centre), and the broch itself is in the care of Historic Environment Scotland..