The Most Expensive ITEM in the World

Country     Total cost (in USD)     Object     Description     Year of completion     Image
Canada

Flag of Europe European Space Agency

Japan

Russia

United States
157 billion[1]     International Space Station

(under construction)
Space station     2011[2] (expected)
China     25 billion[3]     Three Gorges Dam

(under construction)
Hydroelectric river dam     2011 (expected)
United States     14.6 billion[4]     Big Dig (Boston, Massachusetts)     Tunnel system     2007
United Kingdom

France
10 billion[5][unreliable source?]     Channel Tunnel     Undersea railway tunnel     1994
United States     8.1 billion per unit[6]     CVN-78 class aircraft carrier

(under construction)
United States Navy supercarrier     2015 (expected)
United States     8 billion (1977 dollars)[7]     Alaska Pipeline     Oil pipeline     1977
European Union

India

Japan

China

Russia

South Korea

United States
6.5 billion[8]     ITER

(under construction)
Experimental fusion reactor     2016 (expected)
United States     6.3 billion[9]     New Bay Bridge

(San Francisco & Oakland, California) (under construction)
2013
Flag of Europe CERN     6 billion[10]     Large Hadron Collider (LHC)     Particle accelerator     2008
Japan     5 billion[11]     Akashi-Kaikyō Bridge     World’s longest suspension bridge     1998
Russia     4.3 billion[12]     Mir

(de-orbited in 2001)
Space station     1996
United States     4.2 billion [13]     National Ignition Facility (NIF)     Research Facility     2009 (expected)
United Arab Emirates     4.1 billion[verification needed]     Burj Dubai

(under construction)
Supertall skyscraper     2009 (expected)
United Kingdom     3.9 billion[14]     Queen Elizabeth class aircraft carrier     Royal Navy supercarrier     2014 (expected)
United States     3.8 billion[15]     Deer Island Waste Water Treatment Plant     Sewage treatment     2000
Netherlands     3.75 billion[16]     Oosterscheldekering     Storm surge barrier and floodgate     1986
Australia     3.2 billion[17]     Rivercity Motorway - North-South Bypass Tunnel (1 of 5 proposed)     Tunnel transportation system     2010
United States     3.2 billion[18]     USS Jimmy Carter     Seawolf class submarine     2004     USS Jimmy Carter (SSN-23), departs Naval Submarine Base Kings Bay for a one-night underway that included an embark by former President Jimmy Carter and his wife Rosalynn. 11 Aug. 2005.
United States     2.2 billion per unit[19]     B-2 Spirit Stealth Bomber     Multi-role stealth heavy bomber operated by the United States Air Force     1988
Taiwan     1.8 billion[20][21]     Taipei 101     World’s tallest completed skyscraper     2004
United States     ~ 1.7 billion per unit[22][verification needed]     Space Shuttle     Partially reusable launch system created by NASA     1977
United Kingdom     1.57 billion[23]     Wembley Stadium     Stadium     2007
United States     1.3 billion[24]     New Yankee Stadium     Stadium     2009
United States     1 billion[25]     Dallas Cowboys New Stadium

(under construction)
Stadium     2009 (expected)     Dallas Cowboys New Stadium
Hong Kong     1 billion[verification needed]     Bank of China Tower     Skyscraper     1990
United Kingdom     900 million[verification needed]     RMS Queen Mary 2     Ocean liner owned by Cunard Line     2003
United Arab Emirates     650 million[26]     Burj Al Arab     World’s third tallest hotel building[27]     1999
United States     500 million per unit[28]     Titan IV     Space booster