In a realm where luxury is a necessity in order to elicit interest, penthouse living at the pinnacle of the market is other-worldly. The private lives of the world?s most elite luxury real estate buyers remain discreet, however, a glimpse into the top offerings of penthouses around the globe provides a glimmer of this sequestered lifestyle.

Antila | South Mumbai

In a category all its own, the Antila tower is actually entirely owned and utilized as a personal residence by business magnate Mukesh Ambani and his family. At an estimated $1-2 billion USD to construct, Antila is considered the world?s second most expensive home after the Buckingham Palace. The 400,000-square-foot property is located on Altamount Road; one of the world?s most highly-priced streets. Of the total 27 floors, Ambani utilizes the top six as his residence. The remainder of the floors are used for guest suites, a salon, and ice cream parlor, a 50-person theater, a private mega-temple and garage space for 168 cars.
La Tour Odéon | Monte Carlo, Monaco

In a country where luxury real estate prices are notably exorbitant, La Tour Odéon holds the record for the world?s most expensive penthouse at $335 million USD. Atop the 49-story concrete and glass tower presides the five-floor penthouse boasting 31,500 square feet. Front-row accommodations for the Grand Prix include spectacular Mediterranean Sea and city views to be savored from floor-to-ceiling glass walls. A water slide descends fro...