Shire Hall is an historic 125-year-old listed building located on the island of Anglesey, Wales, where it sits overlooking the Afon Cefni river.

Originally constructed of stone in 1899 at the cost of just £4,453, an extension was added in 1912.

The building had been used as office accommodation for a number of years but it is now set to be sold at auction between May 20 and 22.

And those interested in bidding for the mansion are advised to view the property from a safe distance.

This is because Shire Hall now stands derelict - a sad shadow of its former self, after suffering catastrophic fire damage.

It is inaccessible and unsafe to visit, with a collapsed roof and significant infrastructural issues.

But Paul Fosh Auctions - the company overseeing the sale - says the derelict site actually presents an exciting opportunity for developers, with planning permission to convert the property into six riverside apartments already secured.

Gemma Vaughan, of the auction house, said: “The lot offers a most unusual and exciting opportunity for an investor/developer to acquire this historic building in the heart of Llangefni.

“The substantial but derelict property, the site of which extends to some three quarters of an acre, has a prime position overlooking the Afon Cefni.

“Planning permission has been granted for the creation of six townhouses, of four storey construction and extending to approximately 150m squared each, located beside the river.

“However, the site would seem to support a significantly greater density of use, particularly if the now redundant building were to be demolished in part or entirety.

“The vendor’s architects have consulted with the local authority which has indicated support for a more elaborate scheme."

Anglesey is known for its scenic coastline with numerous sandy beaches, with excellent walking both inland and along the Anglesey Coastal Path.

Shire Hall - located on Glanhwfa Road - benefits from good road connections and is located within one mile of the A55 expressway facilitating easy access across Anglesey and the north Wales coast to Cheshire.

The mansion is set to go on sale along with 90 others in an online Paul Fosh Auctions sale, which starts from 12 noon on Tuesday, May 20 and ends from 5pm on Thursday, May 22.