For 560,000 euro (approximately $627,505) a week, guests can charter the "Christina O," a yacht once owned by Greek shipping magnate Aristotle Onassis and Jacqueline Kennedy Onassis.

Valef Yachts, a charter company based in Greece, also offers it for a daily rate: 90,000 euro (approximately $100,850) per day in July and August. It costs 80,000 euro (about $89,642) per day in other months.