Most expensive single object on Earth

Most expensive single object on Earth
Who
Itaipu hydroelectric dam
What
27000000000 US dollar(s)
When
01 January 0001
The Itaipu hydroelectric dam on the Paraná River between Brazil and Paraguay cost $27 billion to build in 1984 (now $35.93 billion), making it the single most expensive object on Earth. Only the International Space Station (ISS) has cost more in terms of a single project.