Skyrocketing housing prices are nothing new, but you'll be amazed to know just how much cash the mega-rich are willing to splurge on their homes. Here's a list of the most insanely expensive homes on Earth:

Antilia – $1 Billion

Built by Mukesh Ambani (the richest man in India), the property boasts 27 floors and was designed to survive an eight-richter scale earthquake. It also houses his collection of antique sewing machines (the largest in existence).

The White House – $320,364,354

Currently home to President Obama, the property was constructed during the last decade of the 18th century. It has 16 bedrooms and 35 bathrooms.

Villa Leopolda – $750,000,000

The property covers 20 acres and requires 50 gardeners just to maintain it. There's also a large swimming pool, 11 bedrooms, 14 bathrooms, a swimming pool, sporting courts, and a bowling alley. The biggest highlight would have to be the home's spectacular views overlooking the French Riviera. Did we mention that Bill Gates used to live here?

Penthouse D, One Hyde Park – $225,000,000

Considered the most valuable residence in this building, every window in Penthouse D is said to be made of bulletproof glass, while each room has its own panic room and eye scanner. It even has its own wine-tasting room and squash playground.

Fairfield Pond – $220,000,000

This 63 acre compound in the Hamptons of New York is owned by junk bond businessman Ira Leon Rennert. Features include 29 bedrooms, 39 bathrooms, a bowling alley, basketball court, and a hot tub priced at $150,000.

The Hearst Mansion – $165,000,000

This place seems more like a tourist attraction than a home with its 29 bedrooms, 3 swimming pools, a movie theater, a disco and manicured landscaping, The Godfather was shot here, and even the late president John F. Kennedy spent his honeymoon here years ago. So you can expect to shill out hundreds of thousands of dollars just to rent this property.

Franchuk Villa – $161,000,000

This 10-bedroom Victorian estate used to be an exclusive prep school for girls before it was transformed into an extravagant private residence. Besides the panic room, movie theater, gym, and indoor swimming pool, the property also houses expensive antiques and artwork.

Pinnacle $155,000,000

Located in Montana, each bathroom in this mansion comes with its very own fireplace! There's also an indoor and outdoor pool offering amazing views of Pioneer mountain, and a private path that leads directly from the house to the nearby ski resort.

The Manor – $150,000,000

Located in Los Angeles, The Manor was built for the legendary television producer Aaron Spelling, and is now home to the daughter of famous business magnate Bernie Ecclestone. Features include 123 bedrooms, swimming pools, tennis courts, a cinema room, three rooms just for wrapping presents, and even a beauty salon. The on-site parking lot can accommodate up to 100 vehicles and 16 carports.

Uptown Court – $139,000,000

This amazing home in England rests on 58 acres. The reason for all that space has to do with the 103 rooms, five swimming pools, two penthouse apartments, a helipad, a 50-seat cinema room, tennis courts, wine cellar, panic room and and the garage with marble-flooring that can accommodate up to 8 stretch limousines.