Oligarch Rinat Akhmetov’s five‑floor Monaco waterfront penthouse reportedly cost more than half a billion dollars and includes 21 rooms and a private pool Ukrainian oligarch Rinat Akhmetov, the country’s wealthiest man, has reportedly broken the world record for the most expensive residential real estate transaction in history, according to a Bloomberg Businessweek investigation.  Although the deal has not been publicly disclosed, the outlet has cited private documents that suggest Akhmetov purchased a sprawling five‑floor penthouse in Monaco for a staggering $554 million. The 21‑room, 2,500 square meter waterfront property, which features a private swimming pool, a jacuzzi and at least eight parking spaces, is located in the “Le Renzo” building in the principality’s exclusive, newly built Mareterra district. The sale was reportedly finalized in 2024.…