Existing hadron collider is still in Europe. But there is an abandoned project Collider in the USA is , which exceeds the scale of the European one at least two times.
The initial estimate of the Superconducting Super Collider was $4.4 billion, a figure that eventually rose to $12 billion. Finally, after spending some $2 billion on the project, the Congress pulled the plug. When the project was canceled, 22.5 km of tunnel and 17 shafts to the surface were already dug.
For almost fifteen years the SSC was nothing more than the most expensive hole in Texas.
Then, in December 2006, less than six months after investing in the property, Hunt slipped on a patch of ice, broke his skull and died. With the driving force behind the Collider Data Center project gone, it’s future was thrown into doubt and eventually it was shelved.
Today, the collider complex remains abandoned and run down with shattered glass, broken wall titles and plywood barred windows. The proposed collider is however still at sale – the current appraised is at $20 million.