You could use it for storage, or perhaps as the base of a new business – or simply as part of a military complex to help defend yourself against the French...
This array of vaults and tunnels off Manor Road, Chatham, thought to have been built in the early 19th Century during the Napoleonic Wars, is due to go up for sale with auctioneers Clive Emson next month, with a guide price of £100,000 to £105,000.
The Manor Vaults are just one of several unique lots set to go under the hammer on Wednesday February 8, with others including an abandoned church in Dover, a pub in Romney Marsh, an old school annexe in Tunbridge Wells, a large two-floor warehouse next to Iceland in Chatham, woodlands close to Bluewater, and a former sewing shop in Welling.
John Stockey, director and auctioneer with Clive Emson, said the Manor Vaults were likely to have been built at the time of the town's other Napoleonic fortifications, such as Fort Amherst and Fort Pitt.
The vaults are thought to have been used as a munitions store, but Mr Stockey said there was no known definitive record of the property's origins.
"That history has been lost in the depths of time," he said. "There was a ring of forts around Medway, but why this was put where it is is a bit of head-scratcher.
"This one is half way along the river so that might be a factor. Whether anybody knows if they're definitively Napoleonic is not catalogued.
"Normally if it's an ancient monument or listed building, something comes up on the web, but this seems to be completely barren, in terms of knowledge, which is interesting in its own right.
"Apparently it was used as an air raid shelter in the Second World War, but that's just from hearsay. We can't guarantee it's what we think it is, so 'reputably' is the best we can do. It's highly likely to be Napoleonic, but without the documented history that would be a brave call."
In recent time the vaults were used to home a vehicle repair business for many years, but has been left vacant since the occupiers moved out.
The layout consists of three main domed rooms, each of which have entrance doors to the front and are connected at the rear through underground tunnels, with a total floor area estimated at around 403 sq.m.
Electricity and water are connected and there is a private drainage facility into a septic tank which serves the toilet facilities.
"It could suit a lot of people as storage," added Mr Stockey. "They do need some work doing to them to make them water tight and renew the electrics, but the basics are all there."
For buyers looking for something slightly closer to a home-shaped building, the former United Reform Church in West Langdon, between Dover and Deal, could be an option with a guide price of £100,000 plus.
The now vacant church is said to have been built in six weeks in 1866 and opened for service two days before Christmas of that year.
Located adjacent to cottages, it has an electricity supply and may offer potential for conversion, subject to all necessary consents being obtainable.
Down the coast at St Mary in the Marsh, New Romney, buyers have the chance to snap up the historic and rural Star Inn pub, with offers being asked for over £380,000.
First registered as an ale house in 1711, the pub was named The Star as early as 1732, although the building's origins stretch back further to the late 15th century when it was a thatched farm building.
In later years the pub had literary links – thought to once have been home to playwright Noel Coward and was at one time frequented by Railway Children author Edith Nesbit.
The building consists of a ground floor with bar area, restaurant and kitchen. Above are two further floors with private accommodation and an office.
Outside there are gardens to the front and side, with private garden to the rear and a car park.
For those who want a bit more space, a two-storey workshop and warehouse next to Iceland in Chatham town centre could be yours for a guide price of £100,000 - £110,000.
Having been occupied by the same tenant for many years, the premises are now in need of refurbishment, but it's considered there may be potential for redevelopment of the site, subject to all necessary permission being obtained.
Each floor is 18.9m long by 8.1m wide, and the property has parking and open storage located immediately behind the frontage onto Batchelor Street.
In Tunbridge Wells a former to St Peters School in North Street will be offered for a guide price between £235,000 and £234,000.
Auctioneers say it could be suitable for conversion into residential, perhaps a pair of flats, subject to all necessary consents being obtained.
The ground floor includes an entrance hall, cloakroom, girls and boys toilets, former dining room/gym and a kitchen, with a garden area outside.
In Bean, near Bluewater, a 0.35 acre patch of woodland is being sold for £40,000 to £42,000.
Located within a mixed commercial and residential area within a short distance of Bluewater Shopping Centre, and near to Ebbsfleet, auctioneers say there may be a variety of suitable uses for the land in the future, subject to permission.
And finally, one of the more expensive lots on offer includes the former Welling Sewing Shop, which comes with a guide price tag of £1000,000 plus.
Listed as a "mixed residential and commercial redevelopment opportunity" the property in Welling High Street, has an approved planning scheme for a residential apartment building with commercial retail/office spaces, and is considered to be of "particular interest to major development organisations".
The substantial detached building has rear access and a parking area, but is now in a dilapidated condition.
Planning Permission was granted by the London Borough of Bexley in September last year for the demolition of the existing building and erection of a part four/part five storey building containing commercial space and nine apartments.