This property was last sold in the 1800s, but had been valued at £135 million now. For your money you get an impressive historic building, nestling on acres of prime waterfront.
9. The Playboy Mansion - £138 million
This California Mansion will hold a particular appeal for a certain demographic, and sold recently for a rumoured £138 million. For your money you get the home to the world's most famous playboy - although arguably both the estate and the playboy are slightly past their heydays.
8. Manapalan Mansion, Florida £150 million
This property sits at the southernmost tip of Florida. It boasts 33 bedrooms and 47 bathrooms, and was once home to celebrated socialite Gloria Guinness.
7. Ellison Estate, California £154 million
Larry Ellison is the co-founder of Oracle, the one of the richest men in the world, so his home is understandably lavish. It's spread over 23 acres, and home to 10 buildings - including a bath house and a tea house.
6. The Manor at Holmby Hills, Los Angeles £154 million
This was built for TV producer Aaron Spelling and his wife Candy in 1988. It has an astonishing 122 rooms, and recently sold for $200 million.
5. 18-19 Kensington Gardens £171m million
This is the only London property to make this list, and is unsurprisingly located on Billionaire's Row. The property has 12 bedrooms, an indoor pool and parking for 20 cars. It belongs to steel magnate Lakshmi Mittal.
4. Four Fairfield Pond, Sagaponack. New York £192 million
This 29-bedroom, 39-bathroom house nestles in 63 acres. It's home to Ira Rennet, the owner of a manufacturing holding company. Among the most notable features of the property are a basketball court, three swimming pools and a 91-foot long dining room.
3. Bel Air Spec Manor, Los Angeles, £193 million
It was put on the market recently for $250 million, and is the priciest home ever put up for sale in America. For your money you get plenty of room - including a James-Bond themed movie theater and four-lane bowling alley.
2. Villa Leopolda, France £578 million
The largest French villa in the world is situated on the Riviera, and sits in an 18 acre estate. It was Named after King Leopold II, the longest reigning monarch of Belgium, and its colourful history includes being featured in films of The Red Shoes and To Catch a Thief.
1. Antilia Building £650 million
This 27-storey building covers 400,000 square feet, and features three helipads on the roof - and space for 168 cars in the garage. It's owned by a single family, who live on the upper floors.
It's also worth noting that some of the lists of the world's most expensive buildings feature Buckingham Palace at number one, because it's worth £1 billion. However, given how unlikely it is ever to come to the market, it should perhaps feature in a separate list of incredibly expensive buildings owned by countries around the world.
Most viewed property of the year
Most viewed property of the year
This unassuming three-bedroom detached house in Martins Heron in Berkshire doesn’t immediately look like the kind of property to draw the crowds. However, the fact it was used as Harry Potter’s home in the first of the films means we were intrigued to see inside this £475,000 property that was ideal for commuting.
This was an impressive seven-bedroom home in Upper Denby, on the market for £1.3 million - with plenty of rustic charm and a wood-burning stove. However, we all know the real reason this made it to the list of the most-viewed properties: it’s the enormous play area complete with pirate ship that you can just catch sight of through the lounge window.
This five bedroom relatively newly-built mansion has every whistle and bell you could wish for - from a cinema and games room to a gym, swimming pool, and a dining room that’s big enough for a grand piano in the corner. It’s still on the market for £1.05 million, and is right next to Lincoln Golf course if you fancy playing a round.
Unsurprisingly, this development project on Chadwick Road in East London has been snapped up. At just £1 million you got 13 rooms over four floors - with off-street parking for three cars. No wonder it was the seventh most popular home for us to look at, and dream that with a bit of elbow grease we could have a huge London property... and we could finally park somewhere near it too.
This is a home that comes with a dream lifestyle. For just £1.4 million, you can get an incredibly swanky five-bedroom farmhouse in seven acres of lovely Welsh countryside. You also get a two-bedroom barn conversion - either to house visiting family, or to run as a holiday letting business. The house is still in the market - so that dream could still be yours.
Ever fancy your own posh lakeside hideaway with its own jetty just over an hour from London - for just £2.8 million?
For just £545,000, this 6-bedroom house in Donaghadee could be yours. The property itself is very recently developed in an elegantly rustic New England style. There's plenty of room, and a dream bathroom. But possibly the reason it features so high up the list of most-viewed houses is that it comes with a paddock and stable - perfect for anyone with horsey aspirations.
It’s easy to see why this pretty £375,000 cottage is in such high demand. First is the fact it has been rebuilt from reclaimed stone, so combines old world charm with handy modern features (like a good-sized kitchen and fancy bathroom). Then there’s the location - right in the centre of the village of Holmfirth - best-known as the setting of Last of the Summer Wine.
This impressive house in Bromley in Kent has footballer written all over it. From the pale grey colour scheme, to the acres of space, and the enormous patio for entertaining, there's plenty for a footballer to love. At just £1.7 million it’s pocket-change for them too. For the rest of us, there’s the chance to dream of a mansion within commuting distance of London for the price of a flat in Notting Hill.
There was a time when a semi-detached five-bedroom home in Hampstead Garden Suburb was the sort of thing that ordinary families could aspire to. Now it's the kind of thing we spend our time daydreaming over on property websites: marveling at a 90 foot garden and the fact it has a garage. The price tag of £2.25 million means it's the kind of house we can only ever afford to look at online - which is probably why it's the most viewed property of the year.