McCaig’s Tower is a prominent landmark in the resort town of Oban in Argyll on Scotland’s west coast.

Built in 1897 by local banker John Stuart McCaig, the aim of the tower was to provide work for local stonemasons and a lasting monument to the McCaig family.

The climb from the town centre to McCaig's Tower is well worth the effort when faced with the spectacular views across Oban Bay to the Atlantic Islands. The gardens inside the tower are well maintained and are a peaceful escape from the hustle and bustle of town life in Oban.

McCaig's Tower or McCaig's Folly is a prominent tower on Battery Hill overlooking the town of Oban in Argyll, Scotland. It is built of Bonawe granite taken from the quarries across Airds Bay, on Loch Etive, from Muckairn, with a circumference of about 200 metres (660 ft) with two-tiers of 94 lancet arches (44 on the bottom and 50 on top). It is a Grade B Listed historic monument.

The structure was commissioned, at a cost of £5,000 sterling (equivalent to £690,000 in 2023), by the wealthy, philanthropic banker (North of Scotland Bank), John Stuart McCaig.

John Stuart McCaig was his own architect. The tower was erected between 1897 and his death, aged 78 from cardiac arrest, on 29 June 1902 at John Square House in Oban.

McCaig's intention was to provide a lasting monument to his family, and provide work for the local stonemasons during the winter months. McCaig was an admirer of Roman and Greek architecture, and had planned for an elaborate structure, based on the Colosseum in Rome. His plans allowed for a museum and art gallery with a central tower to be incorporated. Inside the central tower he planned to commission statues of himself, his siblings and their parents. His death brought an end to construction, with only the outer walls completed. Although his will included £1,000 per year for maintenance, the will was disputed by his heirs; their appeal to the court was successful.