Sweeping in every direction is a panoramic view of Los Angeles and the Pacific Ocean. Beneath him is a gargantuan glass and marble residence with moats, four swimming pools, 20 bedrooms, a nightclub, a bowling alley, a cinema and walls and ceilings made of jellyfish aquariums. Price: $500m. From this hilltop eyrie in Bel Air, LA’s plushest neighbourhood, other estates belonging to the likes of Jennifer Aniston and Elon Musk look puny in comparison.