This photo from 2003 captures German billionaire businessman Klaus-Michael Kühne posing by the pool of his holiday villa on the Spanish island of Mallorca. The vast estate reportedly spans an enormous 53,820 square feet (5,000sqm) and includes a tennis court and breathtaking waterfront views.

Kühne took over as CEO of Kuehne + Nagel International AG, the transport and logistics company founded by his grandfather, in 1966. In later years, he expanded his portfolio to become the largest single investor in German airline Lufthansa and a stakeholder in German football team Hamburger SV. His net worth today stands at around $37 billion (£27.7bn).

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