A disused water tower bought from Scottish Water for £2,700 last year is being offered for sale by its private owner for £19,000.
The concrete structure at Knockaird Reservoir at Ness on Lewis is being sold on a property auction website.
The sales pitch for the tower suggests it could be converted into a house and mentions the area's attractiveness to surfers and sea kayakers.
It also said the building has "stunning" sea views.
Scottish Water sold off the tower, which sits on Lewis' Atlantic coast, in September last year.