There is no blueprint or shortcut for building a world-changing megaproject. In fact, each one must be designed and built from the ground up, often amidst considerable amounts of red tape and criticism. Builders of megaprojects embrace the unknown, even when faced with incredible amounts of risk and massive cost overruns. At the same time, successful megaprojects can accomplish things that have never been done before. They can be pinnacles of human achievement, and spectacles such as the International Space Station and the U.S. Interstate Highway System have already changed the world.

The World’s Largest Megaprojects

This infographic from Futurism details nine of the world’s largest megaprojects currently in construction. They range from giant $64 billion theme parks (Dubailand) to massive canals that will take 48 years to build (South-North Water Transfer Project in China).

Here are the nine largest megaprojects in construction right now, in order from most to least expensive:

  1. International Space Station – $150 billion (as of 2010) The most expensive single item ever built. Expansions beyond 2020 are estimated to eventually cost $1 trillion.
  2. Al Maktoum International Airport – $82 billion This airport in Dubai will be fully operational by 2018. It will be the world’s largest in terms of size and passenger volume – so big that four jets will be able to land simultaneously.
  3. South-to-North Water Transfer Project – $78 billion (as of 2014) Thought the Three Gorges Dam was massive? This other Chinese megaproject is already nearly three times as expensive – it aims to divert water from the Yangtze River using three huge canals to bring it to the north of the country.
  4. California High-Speed Rail – $70 billion Spanning 1,300 km (808 mi), this will link San Francisco to Los Angeles.
  5. Dubailand – $64 billion This mega theme park project will open in 2025 in Dubai. It will also have the world’s largest hotel (6,500 rooms), sports venues, eco-tourism, science attractions, and a giant mall.
  6. London Crossrail Project – $23 billion London is expanding its underground system, with 42 km (26 mi) of new tunnels to connect 40 stations. Everything will be complete by 2020.
  7. Beijing Daxing International Airport – $13 billion Opening in 2025, this airport megaproject will have seven runways and the largest terminal in the world. It will help ease the load on nearby Beijing Capital International Airport.
  8. Jubail II – $11 billion The second phase of development of the Jubail Industrial City in Saudi Arabia will add 100 industrial plants, an oil refinery, and one of the bigger desalination plants in the world.
  9. Hong Kong-Zhuhai-Macao Bridge – $10.6 billion A series of bridges and undersea tunnels to link the three major cities on the Pearl River Delta in China. Ultimately, it will be 50 km (31 mi) of links, opening sometime beyond 2021.

on Even while political regimes across these countries have changed over time, they’ve largely followed a few different types of governance. Today, every country can ultimately be classified into just nine broad forms of government systems. This map by Truman Du uses information from Wikipedia to map the government systems that rule the world today.

Countries By Type of Government

It’s important to note that this map charts government systems according to each country’s legal framework. Many countries have constitutions stating their de jure or legally recognized system of government, but their de facto or realized form of governance may be quite different. Here is a list of the stated government system of UN member states and observers as of January 2023: Let’s take a closer look at some of these systems.

Monarchies

Brought back into the spotlight after the death of Queen Elizabeth II of England in September 2022, this form of government has a single ruler. They carry titles from king and queen to sultan or emperor, and their government systems can be further divided into three modern types: constitutional, semi-constitutional, and absolute. A constitutional monarchy sees the monarch act as head of state within the parameters of a constitution, giving them little to no real power. For example, King Charles III is the head of 15 Commonwealth nations including Canada and Australia. However, each has their own head of government. On the other hand, a semi-constitutional monarchy lets the monarch or ruling royal family retain substantial political powers, as is the case in Jordan and Morocco. However, their monarchs still rule the country according to a democratic constitution and in concert with other institutions. Finally, an absolute monarchy is most like the monarchies of old, where the ruler has full power over governance, with modern examples including Saudi Arabia and Vatican City.

Republics

Unlike monarchies, the people hold the power in a republic government system, directly electing representatives to form government. Again, there are multiple types of modern republic governments: presidential, semi-presidential, and parliamentary. The presidential republic could be considered a direct progression from monarchies. This system has a strong and independent chief executive with extensive powers when it comes to domestic affairs and foreign policy. An example of this is the United States, where the President is both the head of state and the head of government. In a semi-presidential republic, the president is the head of state and has some executive powers that are independent of the legislature. However, the prime minister (or chancellor or equivalent title) is the head of government, responsible to the legislature along with the cabinet. Russia is a classic example of this type of government. The last type of republic system is parliamentary. In this system, the president is a figurehead, while the head of government holds real power and is validated by and accountable to the parliament. This type of system can be seen in Germany, Italy, and India and is akin to constitutional monarchies. It’s also important to point out that some parliamentary republic systems operate slightly differently. For example in South Africa, the president is both the head of state and government, but is elected directly by the legislature. This leaves them (and their ministries) potentially subject to parliamentary confidence.

One-Party State

Many of the systems above involve multiple political parties vying to rule and govern their respective countries. In a one-party state, also called a single-party state or single-party system, only one political party has the right to form government. All other political parties are either outlawed or only allowed limited participation in elections. In this system, a country’s head of state and head of government can be executive or ceremonial but political power is constitutionally linked to a single political movement. China is the most well-known example of this government system, with the General Secretary of the Communist Party of China ruling as the de facto leader since 1989.

Provisional

The final form of government is a provisional government formed as an interim or transitional government. In this system, an emergency governmental body is created to manage political transitions after the collapse of a government, or when a new state is formed. Often these evolve into fully constitutionalized systems, but sometimes they hold power for longer than expected. Some examples of countries that are considered provisional include Libya, Burkina Faso, and Chad.

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