Synonymous with extravagant palaces, fabulous jewels, and a host of other prime assets, royalty has long been entwined with extraordinary wealth.

While today's monarchs rank among the most affluent people on the planet, the royals of the past were on another level.

In fact, several had fortunes equivalent to trillions of dollars in today's money, eclipsing the wealth of King Charles III, who has a personal fortune of £640 million ($866m) according to the most recent Sunday Times Rich List.

Beginning with a threshold of $10 billion (£7.4bn), click or scroll on to discover history's 29 richest royals (including some living examples) based on expert wealth estimates.

Historic wealth figures have been adjusted for inflation to give you an idea of the royals' incredible fortunes in today's money. All dollar amounts in US dollars.

The richest royals of all time: how many living monarchs make the list?