The most expensive thing ever made by humans is the International Space Station (ISS), costing an estimated $150 billion to design, build, and assemble, holding the Guinness World Records title for the most expensive man-made object. This massive orbiting laboratory, a collaboration of multiple nations, continues to accrue costs through ongoing operations and maintenance.
The most expensive man-made object is the International Space Station (ISS).
1. International Space Station: $150 Billion. The most expensive thing in the world is the International Space Station, which was designed between 1984 and 1993 in a joint collaboration of NASA (US), Roscosmos (Russia), JAXA (Japan), ESA (Europe), and CSA (Canada) with a total cost of USD 150 billion.
Say hello to the space station, a technical marvel that also holds a Guinness World Record as the most expensive man-made object ever. In 2030, the massive floating station will be retired. The whole structure is so complex and massive that the decommissioning mission is going to cost nearly a billion dollars.
The Interstate Highway System, $459 billion
The most expensive project in the history of mankind, the Interstate Highway System in America connects more than 47,000 miles and took almost 35 years to complete.
Antimatter is the most expensive substance on Earth, costing around $62.5 trillion per gram. It consists of particles with opposite charges to those in normal matter. When antimatter meets matter, they eliminate each other, releasing vast amounts of energy.
Top 10 most and least expensive cities in the world 2024
The top 10 most expensive cities are, in order from rank 1 to rank 10: Hong Kong, Singapore, Zurich, Geneva, Basel, Bern, New York City, London, Nassau and Los Angeles.
Antimatter is not only a subject of immense scientific curiosity but also the most expensive material in the universe.
1. Masjid al-Haram, Mecca – $120 billion. No building in history has absorbed more into its foundations – spiritually, physically, or financially – than the Great Mosque of Mecca in Saudi Arabia.
The International Space Station (ISS) is the most expensive object ever built, with a total cost of approximately $150 billion. This includes development, assembly, and operating costs over more than two decades.
Could a toy that you own be worth lots of money in the future? If you think so, then hold on to it - as an old Star Wars action figure of Boba Fett has just fetched a record $1.342 million (£1.04 million), making it the most expensive toy ever sold at an auction.
7 Priceless Things
What many don't realize is that scorpion venom is the most expensive liquid in the world. One liter can be sold for around $10 million — and it provides an immediate benefit to humans.
Antimatter, created solely in research labs in tiny atomic quantities, is considered the most expensive material on Earth, with a gram valued at approximately $62 trillion!
Top 20 Most Expensive Things in the World (2025 Edition): From Billion-Dollar Art to Ultra-Rare Cars
The International Space Station (Estimated $150 Billion)
This unseen technology has been in orbit for decades, but maintaining and upgrading it is an incredibly expensive feat. The ISS serves as a cutting-edge platform for scientific research and future space missions.
What Is the World's Most Expensive Building Ever Constructed? The world's most expensive building ever constructed is the Great Mosque of Mecca located in Mecca, Saudi Arabia, with a total construction cost of $100 billion.
He divides up costs into three broad buckets: the cost of the land; the "hard costs" associated with construction; and the "soft costs," such as design, administration, financing, and marketing. The land is about 20% of the total costs; hard construction is 55%; and soft costs are about 25%.
Antimatter, valued at $62.5 trillion per gram, is the world's most expensive substance, created atom by atom in the CERN Large Hadron Collider, a 27 km ring operating near absolute zero to accelerate particles to 99.99% the speed of light.
The rarest thing to have ever existed in the universe is likely the first particles or moments of existence following the Big Bang. This includes phenomena like primordial singularity, quark-gluon plasma, or the extremely short-lived inflaton field responsible for cosmic inflation.
"Outer space, including the Moon and other celestial bodies, is not subject to national appropriation by claim of sovereignty, by means of use or occupation, or by any other means."
One recent global comparison of 60 countries put Australia in sixth place for the price of a 'typical' apartment purchase cost per 100sqm, ranking behind Norway, Austria, Luxembourg, South Korea, and most expensive, Switzerland.
Hong Kong tops the global list with a staggering house price-to-income ratio of 14.4. This means the typical home costs more than 14 years worth of household income. Limited land supply and strong demand from global capital continue to keep prices out of reach for most residents.
10 most expensive places to live in the world