The worldwide spectacular, important architectures of today were once visions of men, millions and millions of money turned them into reality. Following list covers some of the most expensive construction sites in the world, some highly useful like public transits, some still under development and some might stand incomplete ever as a very costly blooper on the face of this planet.
However expensive, the construction projects like space stations, super bridges, dams, underground tunnels, underwater train lines, sports projects, metro and highway projects are tokens of countries development and will always be the standing epitome of human and engineering genius.
The vision behind this system was to safeguard the country from unwanted attacks in addition to eliminating all unsafe routes and traffic jams. The planned cost was 75 million per 5 years initially in 1956 now it has reached a mammoth price after inflation.