1. The British Seabed
Valued at a whopping $100 billion, the royal family has owned the British Seabed since 1066. The date is significant as it’s when the territory was first created after the Norman Conquest.
One reason for its high value is that she owns all the oil and mining rights too. This includes $60 billion worth of oil.
There’s also a huge profit made by offshore wind farms on the seabed too.