The Castle Guide – a selection of Scottish castles
Ardclach Bell Tower, a small defensive C17 belfry on a hilltop for calling people to church or an alarm about raiders
- Closest To: Nairn, Forres, Ferness
- Historic Scotland
- Grid Reference: NH953453
Ardrossan Castle, ruins of C15 castle of the Montgomeries demolished C17 on the site of an earlier castle; considered dangerous
- Closest To: Ardrossan,Saltcoats,Stevenston,West Kilbride,Irvine,Kilwinning
- n/a
- Grid Reference: NS232423
Ardvorlich House, ?site of tower of the Stewarts from C16, site now occupied by late C18 mansion extended C19
- Closest To: St Fillans, Lochearnhead
- Private
- Grid Reference: NN631230
Ardvreck Castle, a ruined C16 MacLeod tower house on Loch Assynt destroyed in C18. Danger of falling masonry.
- Closest To: Inchnadamph,Assynt,Lochinver
- Public Access
- Grid Reference: NC239236
Auchencass or Auchen Castle, ruins of C13 castle rebuilt C14 by Randolphs turned into artillery fort C16/17 by Douglases
- Closest To: Moffat,Beattock
- Public Access
- Grid Reference: NT063035
Auchindoun, ruins of large square C15 tower within later courtyard and earthworks of much earlier multivallate hillfort
- Closest To: Dufftown
- Historic Scotland
- Grid Reference: NJ348374
Auchterhouse Castle, privately occupied and much altered multi-phase house incorporating parts of a C16 tower of the Stewarts
- Closest To: Auchterhouse,Newtyle,Dundee
- Private
- Grid Reference: NO331373
Auldearn Castle, C12 motte erected by King William the Lion with traces of ditch at the base and later perimeter wall
- Closest To: Auldearn
- Public Access
- Grid Reference: NH917556
Auldton Motte, a large earthwork castle of the Moffat family probably destroyed during the Wars of Independence
- Closest To: Moffat
- Public Access
- Grid Reference: NT094058
Avoch Castle, scant remains of substantial C12-14 castle of Murrays extended by Douglases before destruction c1455
- Closest To: Avoch
- Public Access
- Grid Reference: NH696536