The year2001 in architecture involved some significant architectural events and new buildings.

• January 13 – Biblioteca Gallardo, one of the most important libraries in Central America, is among buildings destroyed in theJanuary 2001 El Salvador earthquake.^[1]
• February 11 –Three Rivers Stadium, in Pittsburgh, United States, home of thePittsburgh Pirates andSteelers, is demolished.
• April – Proposals for theGrollo Tower inMelbourne, Australia, projected to become the tallest in the world at this time, are rejected by the local authority.
• September 11 –September 11 attacks:World Trade Center in New York City (designed byMinoru Yamasaki) is destroyed, andThe Pentagon is heavily damaged by hijacked airliners. In New York,St. Nicholas Greek Orthodox Church is completely destroyed; and theDeutsche Bank Building andFiterman Hall are subsequently demolished due to severe damage.
• December 15 – Preservation efforts having been completed on theLeaning Tower of Pisa, it reopens to the public after 12 years of reconstruction.^[2]
• unknown date –6a architects is established byStephanie Macdonald andTom Emerson in London.^[3]

• January 26 –Sendai Mediatheque, Japan, designed byToyo Ito.^[4]
• March 11 –National Museum of Australia inCanberra, designed byHoward Raggatt^[5]
• March 17 –Eden Project,St Austell,Cornwall, UK, designed byNicholas Grimshaw & Partners.
• April –Magna Science Adventure Centre,Rotherham,Yorkshire, UK, designed byWilkinson Eyre. It wins this year'sStirling Prize.
• May 4
  • Milwaukee Art Museum opens the Quadracci Pavilion, the first completed American project bySantiago Calatrava.
  • Sultan Qaboos Grand Mosque opens inMuscat,Oman.
• June 28 –Gehry Tower (designed byFrank Gehry) inHanover, Germany.
• June 30 –National Space Centre,Leicester, England, byNicholas Grimshaw & Partners.
• September 9
  • Jewish Museum, designed byDaniel Libeskind,Berlin, Germany.^[6]
  • National Museum of Ireland'sMuseum of Country Life,Turlough, County Mayo, designed by Des Byrne of Architecture Services,Office of Public Works, is opened.
• September 17 –Gateshead Millennium Bridge, a pedestriantilt bridge for spanning theRiver Tyne, UK, designed by architectsWilkinson Eyre and structural engineersGifford. It wins the 2002Stirling Prize.
• September 23 –Saint Gregory the Illuminator Cathedral, Yerevan (Armenian Apostolic Church), designed by Stepan Kurkchyan.
• November –Kodak Theatre inHollywood, constructed to host theAcademy Awards.^[7]
• November 15 –Palms Casino Resort inParadise, Nevada, USA, designed byThe Jerde Partnership.
• November 21 –Cologne Tower inaugurated; designed by Kohl & Kohl andJean Nouvel.
• December 10 –Puente de la Mujer, a pedestrian swingcantilever spar cable-stayed bridge spanning a dock inBuenos Aires, Argentina, designed bySantiago Calatrava, inaugurated.
• December 11 –American Folk Art Museum inNew York City, USA, inaugurated; designed byTod Williams Billie Tsien Architects.
• date unknown
  • Apartheid Museum inJohannesburg^[8]
  • Neue Galerie New York, opened in theWilliam Starr Miller House, New York City, United States.

• October 30 – Redevelopment ofGasometer, Vienna, byJean Nouvel,Coop Himmelb(l)au,Manfred Wehdorn andWilhelm Holzbauer is completed.^[9]
• date unknown
  • 88 Wood Street office building,City of London, byRichard Rogers.
  • Caja General de Ahorros,Granada, byAlberto Campo Baeza.
  • Betty and Gordon Moore Library in theCentre for Mathematical Sciences (Cambridge), UK, designed byEdward Cullinan Architects.
  • Bibliotheca Alexandrina inAlexandria, Egypt^[10]
  • DG Bank building inBerlin, Germany, byFrank Gehry.^[11]
  • Telekom Tower building, inKuala Lumpur, Malaysia.
  • One Wall Centre opens inVancouver, British Columbia, Canada, by architectsPerkins+Will Canada.
  • Ku’damm-Eck (office building) inBerlin, Germany, byGerkan, Marg und Partner.
  • Neues Kranzler Eck (office building) in Berlin, Germany, byHelmut Jahn.
  • Tower 2000, the first building in theMoscow International Business Centre, Russia.
  • Nidaros Cathedral,Trondheim, Norway (officially completed)^[12]
  • Exhibition building atScotland'sNational Museum of Rural Life completed byPage\Park Architects.
  • Building D,Giudecca,Venice, by Cino Zucchi.
  • Jacobs Ladder (house) atChinnor, England, byNiall McLaughlin Architects.

• Aga Khan Award for Architecture –Geoffrey Bawa
• AIA Gold Medal –Michael Graves
• Architecture Firm Award –Herbert Lewis Kruse Blunck Architecture
• Emporis Skyscraper Award –One Wall Centre
• European Union Prize for Contemporary Architecture (Mies van der Rohe Prize) –Rafael Moneo forKursaal Centre
• Grand Prix de l'urbanisme –Jean-Louis Subileau
• Mies van der Rohe Prize –Rafael Moneo
• Praemium Imperiale Architecture Laureate –Jean Nouvel
• Pritzker Prize –Jacques Herzog and Pierre de Meuron
• Prix de l'Équerre d'Argent –Jacques Herzog and Pierre de Meuron
• RAIA Gold Medal –Keith Cottier
• RIBARoyal Gold Medal –Jean Nouvel
• Stirling Prize –Wilkinson Eyre Architects forMagna Centre,Rotherham^[13]
• Thomas Jefferson Medal in Architecture –Glenn Murcutt
• Twenty-five Year Award –Weyerhaeuser Headquarters
• Vincent Scully Prize –Andres Duany andElizabeth Plater-Zyberk

• January 11 –Denys Lasdun, British architect (born1914)
• January 18 –Morris Lapidus, US Neo-baroqueMiami Modern architect (born1902)
• February 4 –Iannis Xenakis, Greek-French composer, music theorist, and architect-engineer (born1922)
• March 14 –Robert S. McMillan, US architect, co-founder ofThe Architects Collaborative (born1916)
• December 30 –Samuel Mockbee, US architect (born1944)

• Timeline of architecture