It's not surprising that the world's most expensive home belongs to the world's most famous family, and no, I'm not referring to the Kardashians. Since 1873, the Royal Family has occupied London's most famous residence, which is the epitome of opulence.

It has 775 bedrooms, 78 bathrooms, 19 staterooms, and 92 officers, and has served as an official ship for the monarchy since the late 1800s. The palace is approximately 828, 000 square feet in size, with a 40-acre garden. It was built in the Neoclassical architectural style and designed by several architects over the centuries, but John Nash is the original architect.

Owned by the British Royal Family.

Location: Westminster, London.

Price: $2.5 Billion.

The Ambani family is the epitome of opulence in India, and their home reflects this. Mukesh Ambani, India's richest man, is the chairman and managing director of Reliance Industries Limited, a Fortune Global 500 company.

The structure is 400,000 square feet in size and 27 stories tall. Antilia was designed to withstand a category 8 earthquake and includes 3 helipads, a 50-seat movie theater, 6 levels of underground parking, multiple swimming pools, yoga and dance studios, and an ice cream parlor. You can't go wrong with an ice cream parlor in your own home.

To keep the Antilia house running on a daily basis, at least 400 people are required. In addition, the house was named after the mythical island of "Antillia," and the Perkins and Will design firm took four years to complete the project.

Owned by Mukesh Ambani.

Location: Mumbai, India.

Price: $1 billion

The Villa La Leopolda is one of many properties owned by King Leopold II of Belgium in the nineteenth century. It now belongs to Lily Safra, the widow of Brazilian Swiss banker Edmond Safra and a living survivor.

This most expensive luxury home is located on the French Riviera's Alpes-Maritimes. It has 11 bedrooms, 14 bathrooms, an outdoor kitchen, a helipad, and a world-class swimming pool.

Interestingly, Alfred Hitchcock's 1955 film "To Catch a Thief" was shot in the Villa Leopolda. Ogden Codman Jr., an American architect, designed the house.

Owned by Lily safra.

Location: Villefranche-Sur-Mer, France.

Price: $750 million

Rinat Akhmetov, Ukraine's richest man and oligarch, owns Villa Les Cèdres. This is not the Ukrainian's only luxury residence; he also owns a £136.4 million apartment in One Hyde Park, London, UK.

This property in France, on the other hand, is much more of a splurge. The property is approximately 18,000 square feet in size and includes a 35-acre garden, 14 bedrooms, an Olympic-size swimming pool, and a large stable that can accommodate 30 horses.

This French mansion epitomizes opulence. The house was previously owned by King Leopold II of Belgium in 1904. This is one of the world's most expensive homes.

Owned by Rinat Akhmetov.

Location: Saint-Jean-Cap-Ferrat, France.

Price: $450 million.

Les Palais Bulles, or bubble rooms, were inspired by early man's abodes, which were clustered in a bubble-like cluster. Pierre Cardin, a well-known figure in the fashion industry, owns the house.

During the holidays, Pierre visits his artistic French home as a getaway for his family and friends, and as you might expect, parties and fashion events have been held there. Dior presented his cruise collection as an indoor-outdoor fashion show at Les Palais Bulles.

Antti Lovag and a Hungarian architect designed the house, which was built between 1975 and 1989.

Owned by Pierre Cardin.

Location: Théoule-Sur-Mel, France.

Price: $390 million

The Odeon Tower, owned by SCI Odeon, a subsidiary of Groupe Marzocco, is a luxury penthouse located just by the Mediterranean Sea and is Europe's tallest building.

The apartment is approximately 35,000 square feet and is located on the 47th floor of the massive building. A private waterslide into a 360-degree view infinity pool and a private elevator round out the amenities.

The Penthouse was created by Groupe Marzocco and designed by architect Alexander Giraldi. This is one of the world's most expensive homes.

Owned by Groupe Marzocco.

Location: Morocco, Spain.

Price: $330 million.

Ira Rennert's colossal estate in New York City puts the "big" in "Big Apple." Ira is an American billionaire who founded the Renco Group Industries Holding Investment Company, which specializes in smelting and manufacturing.

The mansion is part of Fairfield, a 63-acre estate that is one of the largest in America. It has 20 bedrooms, three dining rooms, 39 bathrooms, three swimming pools, and a 154-seat theater. There is also a recreation area with a basketball court, two bowling alleys, a gym, squash courts, and an on-site power plant. Because the estate consumes a lot of power, a personal power plant was built to keep the lights on.

This is one of the world's most expensive homes.

Owned by Ira Rennert.

Location: New York, USA.

Price: $248 million.

Larry Ellison, co-founder of Oracle and the world's seventh richest man, owns this 23-acre estate. He appears to be quite tasteful, despite being one of the world's wealthiest men. He had a vision of erecting an ancient Japanese structure in the United States, and he was successful. He modeled his house after the Emperor's Palace in Japan.

The Ellison estate consists of ten distinct properties, including a tea house, a bathhouse, a man-made lake, a Koi pond, and expensive trees such as maple cherry blossom oaks and redwoods that surround the area. These trees are beautifully spread throughout the grounds, giving it an authentic ancient Japanese feel, just as Ellison intended.

This is one of the world's most expensive homes.

Owned by Larry Ellison.

Location: Woodside, California.

Price: $200 million.

Are you surprised that one of the most expensive houses is in Beverly Hills? Don't be that way. In America, Beverly Hills is the epitome of "mama I made it." Jeff Green, a business magnate and real estate mogul, owns the behemoth of a home.

The house has 12 bedrooms, 20 bathrooms, numerous swimming pools, tennis courts, waterfalls, theaters, and a 27-car garage. Bob Ray Offenhauser, an American mega-mansion designer, created Palazzo di Amore.

This is one of the world's most expensive homes.

Owned by Jeff Green.

Location: Beverly Hills, California.

Price: $198 million

The garden at 18-19 Kensington Palace is owned by billionaire steel magnate Lakshmi Mittal and is located in London's affluent Billionaire's Row. Mittal walks the same streets as the world's wealthiest and most famous people. Mittal shares a paper route with Prince William and Kate Middleton. Lakshmi Mittal is the chairman and CEO of ArcelorMittal, the world's largest steel producer.

His house has 12 bedrooms, Turkish baths, an indoor pool, and a parking space for 20 cars. This most expensive home is located in Billionaire's Row, which is London's most affluent neighborhood, and is not far from Mittal's. Sir Charles Barry designed his house in 1845.

These homes are incredible architectural feats, designed and owned by extraordinary people, and they truly put the "home" in "home sweet home."

Owned by Lakshmi Mittal.

Location: London, U.K.

Price: $128 million