We just came across an article in the September issue of GQ listing the most important Buildings of the 21st century.  In no particular order, here’s their list:

Casa da Musica, Porto, Portugal  (2005) -  Rem Koolhaas
Valleaceron Chapel, Almadenejos, Ciudad Real, Spain (2000) – Sancho-Madridejos
Guthrie Theater, Minneapolis (2006) – Jean Nouvel
Metropol Parasol, Seville, Spain (2007) – Jurgen Mayer H
BMW Plant/Central Building, Leipzig, Germany (2005) – Zaha Hadid
Tubac House, Tubac, Arizona (2000) – Rick Roy
New Museum, New York City (2007) – Kazuyo Sejima +Ryue Nishizawa/SANAA
Scottish Parliament building, Edinburgh (2004) – Enric Miralles

Turning Torso, Malmo, Sweden (2005) – Santiago Calatrava
De Young Museum, San Francisco (2005) – Herzog & de Meuron