A disused yard at Glenarm harbour is to be redeveloped in a major project aimed at helping the wider area's regeneration.
Expressions of interest are being sought for the 1.2 acre Eglington Yard in the Co Antrim village.
The site is being marketed by agents Lisney under the instructions of Mid and East Antrim Borough Council.
The agency said an investor could capitalise on the already successful tourist appeal of the area, also home to Glenarm Castle and Glenarm Forest Park.
The site for sale has an open-sided warehouse, outbuildings and a "substantial" yard area.
Andrew Gawley, director at Lisney, said: "Whilst planning permission for a mixed commercial and residential scheme was previously granted for Eglington Yard, we are inviting interested parties to come forward with their own proposals and parties should then make their own enquiries through the planning process."
Eglington Yard faces New Road, part of the Causeway Coastal Route, and is directly opposite the new Tourist Information Office.
Lindsay Millar, Mayor of Mid and East Antrim, said she hoped the right buyer and scheme would "return this vacant opportunity to a viable and sustainable jewel in Glenarm's crown".
Another opportunity for developers to benefit from Northern Ireland's growing tourism market is at Lisney-listed Mountfield Lodge site in Omagh, which is on the market for £1.35m.
This includes a detached house on an elevated private estate with 91 acres of woodland, a 12-acre lake and full planning permission for four tourist accommodation units and three residential building sites.
And on 581 Shore Road in north Belfast, a prime development site occupying 1.9 acres, with planning permission for 31 residential properties, has gone on the market for £775,000.
The site, listed by O'Connor Kennedy Turtle, includes permission for one detached property, 12 semi-detached houses and 18 town houses.
In Lisburn, agency Frazer Kidd is selling four shop units - three of which are occupied - at Bow Street and Bow Lane. The sale of all four for £740,000 follows the announcement of the proposed sale of Bow Street Mall for £18m.
And tomorrow, agency Osborne King will host its online auction with bidding starting at 9am. It has also announced its next online auction on December 5.