The "golden passport" of the world is often called the passport (citizenship) of the country of Saint Kitts and Nevis in the Caribbean. Such a passport makes it possible to travel without a visa to more than 100 countries, and it can be "purchased" for investment: the country became the first in the world (back in the 1980s) to launch a program of acquiring citizenship for large investments in the national economy.
The current version of the program has been operating since 2015: more than 700 people from all over the world have already received such passports, large businessmen and entrepreneurs from China and the Middle East have shown great interest. By the way, the United States has already sent a displeased note to Saint Kitts and Nevis - they say, why are you cooperating with Iran? - and the small state decided not to quarrel with Big Brother, no longer considers applications from the citizens of Iraq and Afghanistan.
But the coronavirus crisis swept through the world economy, including the tourism industry, and the "golden passport" began to cost significantly less (such discounts will remain on it until the end of 2020). A family of 4 can get a country's passports for 150,000 $ if they invest in a sustainable development fund - and in neighboring Grenada, Antigua and Barbuda, the Dominican Republic, the amount is even less, from 100,000 $. For example, the founder of VK and Telegram Pavel Durov in 2013 acquired this passport for 250,000 $.