This is the list of giant projects, Any highly investment projects and large scale. They are also sometimes called "major programs". Some of these projects are so large that the list may never be complete. The most expensive inflation-adjusted project in world history has become the United States Highway System. Projects costing more than one billion US dollars, They attract public attention due to their significant impact on communities, the natural environment and budgets.
Projects can also be "self-initiatives," and very expensive, and to the general public.”
Giant projects need care in the development process to reduce the risks that may impede the implementation of the project, which may lead to a change in strategies.