Rosehearty Tower was constructed to observe RAF bombing practice off the coast of Aberdeenshire.

But the building has been converted into a family home and has now gone on the market for offers over £350,000.

Built in 1994, the 45ft tower allowed military observers to watch in relative safety as jets bombed targets being towed off shore.

A Mark 84 bomb dropped by an RAF Tornado can make a crater 50ft wide and spray lethal fragments up to 356 metres away.

So the building, which cost £750,000 to construct, had to be able to withstand the effect of an occasional stray bomb.

When the bombing practice ended in Aberdeenshire in 2002, the tower was bought for £75,000 and converted into a family home.

It now features four bedrooms, two kitchens, a triple garage, spiral staircase – and the original bomb-proof windows.

The upper part of the structure, which once allowed military observers to watch the fall of deadly weapons, now affords 360-degree views of breathtaking coastal scenery and wildlife, including dolphins.

Sellers Doorstep Agents stated: “The area boasts lovely walks, plenty of outdoor pursuits such as bird, whale and dolphin watching, bowling, cycling, sailing and is a well known fishing and scuba diving spot.

“The property is set in around 0.529 hectares of grounds with commanding views over the Morayshire coastline and North Sea.

“The property, subject to necessary consents would lend itself to potential bed and breakfast and holiday lets.”

It adds: “Electric-gated entry to private drive leads to a triple garage with electricity and electric doors. Entry to the building is via a vestibule which leads into the self-contained annex and main tower section.

“The main tower comprises on the ground floor a large mirrored dressing room and utility room, stairs lead to the first floor bedroom and shower room, stairs continue to the second floor bedroom and bathroom.”

Akshay Ruparelia, managing director for sellers Doorstep Agents, said it was “a fantastic building with great history behind it”.