Since 1873, Buckingham Palace has been the official residence of the monarchy, consisting of 775 rooms, 78 bathrooms, 92 offices, and 19 staterooms.
Several lavish properties are owned by the British Royal family including the palace.
Approximately 828,000 square feet of the palace and 40 acres of the garden make up the palace's size.
Despite its impressive size and title as the world's most expensive house, it is not the world's largest palace.
The second most expensive house in the world, Antilla, is located in Mumbai, India, and costs a whopping $1 billion.
The house was designed and constructed by Perkins & Will and Hirsch Bedner Associates, both based in Chicago.
Mukesh Ambani, the owner of Antilla, is the Chairman & Managing Director of Reliance Industries Limited, a Fortune Global 500 company, and India's richest man.
It stands 27 stories high and occupies 400,000 square feet in Mumbai's Cumballa Hill neighborhood.
The building is designed to withstand earthquakes of magnitude 8.
The house has six floors dedicated to car storage, a service station for the cars, a temple, a 50-seat movie theatre, and nine elevators.
A health spa, three helipads, a salon, a ballroom and yoga studio, an ice cream room, and multiple cinemas are also available.
According to reports, Antilla requires at least 600 employees to run smoothly.
The third most expensive house in the world is Villa Leopolda.
Lily Safra, the widow of Lebanese Brazilian banker Edmund Safra, owns the villa.
The park occupies approximately 50 acres of land in the Frances Alps-Maritime department of its Cote d'Azur Region.
It has 11 bedrooms, 14 bathrooms, a commercial greenhouse, a helipad, an outdoor kitchen, and one of the nicest pools you've ever seen.
Alfred Hitchcock's 1955 film To Catch a Thief was filmed on the property.
Originally owned by King Leopold II of Belgium, the house was redesigned by American architect, Ogden Codman Jr. in the 1920s.
Located in Saint-Jean-Cap-Ferrat, France, Villa Les Cèdres occupies the fourth spot on our list.
This home is estimated to be worth $450 million, almost half a billion dollars.
Built-in 1830, it was purchased by King Leopold II of Belgium in 1904.
In 2017, it was the most expensive house on the market but has since been overtaken by the next three properties.
There are approximately 35 acres of gardens on the property, and its name comes from the many cedar trees that grow there.
With roughly 18,000 square feet of space, this house has 14 bedrooms and an Olympic-sized swimming pool, and a large stable that can accommodate 30 horses.
Le Palais Bulle, also known as the "Bubble Palace", was designed by the Hungarian architect Antti Lovag and built between 1975 and 1989.
Its nickname comes from the round rooms that overlook the Mediterranean.
In designing the property, Lovag was inspired by man's earliest dwellings; however, this dwelling is equipped with some nice creature comforts.
Among the property's amenities are three swimming pools, numerous gardens, and a 500-seat amphitheater.
Currently, Bubble Palace is owned by Pierre Cardin, a French fashion designer born in Italy.
Pierre primarily uses the property as a holiday home, but it is also a stunning venue for parties and events, including when Dior showed its cruise collection at an indoor/outdoor fashion show there.
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