The most expensive thing in the world as of 2025 is the International Space Station (ISS), valued at approximately $150 billion. It serves as a floating laboratory and a symbol of international cooperation in space research since 2000

. Among luxury items on Earth, the History Supreme Yacht is the priciest, valued at about $4.8 billion. This yacht is renowned for its extravagant use of materials such as gold plating, platinum, meteorite fragments, and even Tyrannosaurus Rex bones, making it a pinnacle of opulence

. Other notable expensive items include:

• Antilia, a 27-story private residence in Mumbai owned by Mukesh Ambani, valued around $2 billion to $4.6 billion

• The Imperial State Crown, part of the British Crown Jewels, estimated between £3 billion and £5 billion, adorned with thousands of precious stones

• The Hubble Space Telescope, valued at about $16 billion, which has greatly advanced our understanding of the universe

In summary, while luxury yachts and buildings command multi-billion dollar prices, the International Space Station remains the most expensive man-made object globally due to its immense scientific and collaborative value