Thailand's King Maha Vajiralongkorn is the world's richest monarch, with an estimated net worth of up to $59 billion. The king's fortune is enormous, but people have recently been more interested in his personal life than his wallet.

During the coronavirus outbreak, Maha Vajiralongkorn reportedly booked out every single room in a hotel in Germany to self-isolate with his harem of 20 women and his staff. More recently, while visiting his mother in the hospital, he instructed residents to cover their curtains and not stare out of them.

After his father died in 2016, the 67-year-old monarch ascended to the throne. The Crown Property Bureau is in charge of his fortune. His family owns around 16,210 acres of property in Thailand, as well as 40,000 rental contracts throughout the country, including 17,000 in Bangkok. The King also has a substantial stake in the Siam Cement Group and the Siam Commercial Bank. As if that wasn't enough, the Thai monarch also owns the Golden Jubilee Diamond, which is the world's biggest cut and faceted diamond.

Country: Thailand
Estimated net worth: $43 billion

Sultan Hassanal Bolkiah of Brunei, who is also the Prime Minister of Brunei, is ranked second in list of the richest royals in the world, making him one of the world's remaining absolute monarchs.

Sultan Hassanal Bolkiah is the world's second longest-reigning king, behind Queen Elizabeth II. He is also the Prime Minister of Brunei, making him the country's absolute ruler. The Sultan is insanely rich based on a lowball assessment of his assets. His riches is said to have originated through his involvement in the oil and natural gas export sector. In fact, the Sultan has been named one of the world's richest persons. He also resides in the world's biggest residential palace, the Istana Nurul Iman, which has over 1,778 rooms. In addition, the Sultan is said to have a fleet of around 600 Rolls Royces.

Country: Brunei
Estimated net worth: $28 - $39 billion

King Salman bin Abdulaziz Al Saud of Saudi Arabia is also extremely wealthy, ranking third on this list.

He is King Abdulaziz's 25th son and the sixth of his sons to rule as kings (the others were Saud, Faisal, Khalid, Fahd, and Abdullah).

Salman is a Sudairi Seven member and the son of King Abdulaziz and Hassa bint Ahmed Al Sudairi. From 1963 until 2011, he served as Riyadh's deputy governor and then as its governor for 48 years. He was then appointed Defense Minister. In 2012, he was appointed Crown Prince. After his half-brother, King Abdullah, died in 2015, Salman ascended to the throne. He has become King Abdulaziz's oldest surviving son since December 2019.

If his familial wealth is taken into account, the Saud Family of Saudi Arabia is the wealthiest family in the world, with a fortune of more than $1 trillion. This family is very discreet about their riches and goods, aside from the income he and his family generate from oil and investments. But we all know they have some of the most costly homes, automobiles, yachts, helicopters, private aircraft, artworks, and other possessions.

Country: Saudi Arabia
Estimated net worth: $18 billion

Sheikh Khalifa bin Zayed Al Nahyan, president of the United Arab Emirates from 2004 to 2022 and emir of the constituent emirate of Abu Dhabi from 2004 to 2022.

Khalifa's father was Sheikh Zayed bin Sultan Al Nahyan, ruler of Abu Dhabi and head of the Nahyan dynasty from 1966 to 2004, and president of the United Arab Emirates from 1971 to 2004. Emir Khalifa grew raised in Al-Ain, one of the emirate's most important cities, and became his father's official envoy to the region after his father became emir in 1966.

However, his fortune stems from his position as chairman of the Abu Dhabi Investment Authority, which controls the UAE's surplus oil and is believed to be worth half a trillion dollars. His half-brother also owns Manchester City FC, and the Sheikh is said to own a lot of real estate in London. However, he is most recognized for his generosity.

Country: Abu Dhabi, UAE
Estimated net worth: $18 billion

Sheikh Mohammed bin Rashid Al Maktoum is the Vice President and Prime Minister of the United Arab Emirates (UAE), as well as the Minister of Defence and Ruler of the Emirate of Dubai. After his brother Maktoum bin Rashid Al Maktoum died in 2006, he took over as vice president.

Al Maktoum, a millionaire, makes the most of his money from real estate and is known as "one of the world's most notable real estate developers." Land he owns is administered by the state as a governmental asset. The border between the assets of the Dubai government and those of the ruling Al Maktoum family is blurred. He supervised Dubai's transformation into a worldwide city, as well as the establishment of a number of government-owned firms such as Emirates Airline, DP World, and the Jumeirah Group. Dubai Holding owns some of these. Sheikh Mohammed oversaw the building of a technology park, a free economic zone, Dubai Internet City, Dubai Media City, the Dubai International Finance Centre, the Palm Islands, and the Burj Al Arab hotel in Dubai. He also oversaw the development of the world's tallest structure, the Burj Khalifa.

Country: Dubai, UAE
Estimated net worth: $14 billion

Henri, Grand Duke of Luxembourg OIH is Luxembourg's head of state. He is the eldest son of Jean, Grand Duke of Luxembourg, and Princess Josephine-Charlotte of Belgium. His maternal grandparents were King Leopold III of Belgium and Astrid of Sweden. He is the grandson of King Albert II of Belgium and a cousin of the present King Philippe of Belgium.

Henri studied politics at the University of Geneva before enrolling at the Royal Military Academy Sandhurst in England to become a military officer. On March 4, 1998, Prince Henri was named as Grand Duke Jean's lieutenant representative, assuming the majority of his father's constitutional responsibilities. Henri acceded as Grand Duke of Luxembourg on October 7, 2000, immediately following his father's resignation, and later that day swore the constitutional oath before the Chamber of Deputies.

Grand Duke Henri resides with his wife, five children, and four grandchildren in Berg Castle. His family also has a vacation property in Cabasson, France, in the south of the country. Furthermore, the family has allegedly received approximately $300,000 each year since 1948 to carry out its royal duties.

Country: Luxembourg
Estimated net worth: $4 billion

Hans Adam II, Prince of Liechtenstein, member of Liechtenstein's royal dynasty who became prince (head of state) in 1989.

Prince Hans Adam II spent his early childhood at the castle of Vaduz with his brothers and sister, although he and his siblings were not secluded from the principality's regular life. He went to elementary school in town and participated in camping and other activities as a Boy Scout. He attended the Schottengymnasium ("Scottish Academy") in Vienna and Zuoz, Switzerland for his secondary school. After a brief stint as a trainee at a London bank, he enrolled in the University of St. Gallen, Switzerland, in the fall of 1965, and graduated in 1969.

The Prince of Liechtenstein owns the Liechtenstein Global Trust, Europe's largest family-owned private wealth organization. As a result, he is Europe's wealthiest monarch. He is also an art collector, with an impressive collection on show in the Liechtenstein Museum. He made his money through investments in vineyards and an agricultural enterprise.

Country: Liechtenstein
Estimated net worth: $3.5 billion

Emir Sheikh Tamim bin Hamad Al Thani took over after his father, Sheikh Hamad, abdicated in his favor.

Tamim received his education in the United Kingdom. He, like his father, graduated from the Royal Military Academy at Sandhurst in 1998. He subsequently returned to Qatar and was commissioned as an officer in the Qatari military. Tamim was chosen in 2003 to succeed his elder brother Jassim, who had resigned as crown prince. Tamim was groomed to run the country during the following decade, holding a series of progressively critical economic, diplomatic, and national security responsibilities. He was named deputy commander in chief of the armed forces in 2009.

The Sheikh of Qatar's fortune stems from his creation and management of the Qatar Investment Authority, which oversees the country's surplus oil and gas reserves. He also notably donated $137 million to Al Jazeera, the Arab world's first worldwide news network. The (now) 39-year-old monarch was the world's youngest sovereign in 2018.

Country: Qatar
Estimated net worth: $2.1 billion

Morocco's King is Mohammed VI. He is a member of the Alawi's family - one of the richest royals in the world and ascended to the throne on July 23, 1999, following the death of his father, King Hassan II.

King Mohammed VI attended the Royal Palace College for basic and secondary education before enrolling at Mohammed V University in Rabat, where he earned a bachelor's degree in law in 1985 and a master's degree in public law three years later. In the late 1980s, the crown prince studied at the European Commission's headquarters in Brussels. He then enrolled in France's University of Nice, where he earned a PhD in law in 1993. His PhD dissertation focused on the Arab Maghreb Union and the European Economic Community. He was schooled in both Arabic and French, and his hobbies included literature and art.

Mohammed VI earns a salary of $488,604 per year as King of Morocco. But, in addition to being King, he is an adept businessman and banker. His family holds a controlling position in the Société Nationale d'Investissement (SNI), which has operations in banking, mining, real estate, tourism, insurance, telecommunications, and other areas. He also has a large amount of land in the country. According to Forbes, his palace's daily operational budget is $960,000, which is paid for by the Moroccan government.

Country: Morocco
Estimated net worth: $2.1 billion

Prince Albert II is the sovereign prince of Monaco and the leader of the Grimaldi family. He is Prince Rainier III's and Grace Kelly's son.

He was born at Monaco's Prince's Palace and attended the Lycée Albert Premier before going on to study political science at Amherst College. He competed in bobsleigh during the Winter Olympics as a child before quitting in 2002. After his father grew ill in March 2005, Albert was named regent and became sovereign prince when he died a week later. Since his ascension, he has been an outspoken advocate of ocean conservation and the use of renewable energy sources to combat global climate change, and he established The Prince Albert II of Monaco Foundation in 2006 to directly raise funds and initiate action for such causes and greater ecological preservation.

Albert has stakes in the Société des Bains de Mer, which manages Monaco's casino and other entertainment businesses, and his holdings are worth more than $1 billion.
He owns the Société des bains de mer de Monaco, which administers the Monte Carlo Casino and the Opéra de Monte-Carlo. In addition, he owns his mother's house in Philadelphia. In fact, his wedding to South African Olympic swimmer Charlene Wittstock in 2011 was one of the most expensive weddings in the world.

Country: Monaco
Estimated net worth: $1 billion