At the main menu, go to "Museum" then select "Landmark Collection," and then select "Password" and you can enter in codes to unlock landmark buildings to use in the game

Password Effect

kipling Anglican Cathedral (UK)
gaugin Arc de Triomphe (France)
kawabata Atomic Dome (Japan)
orwell Big Ben (UK)
hanafuda Bowser Castle (Nintendo)
gropius Brandenburg Gate (Germany)
kerouac Coit Tower
rodin Conciergerie (France)
mishima Daibutsu (Japan)
shonagon Edo Castle (Japan)
camus Eiffel Tower (France)
twain Gateway Arch (USA)
f.scott Grand Central Station (USA)
mahfouz Great Pyramids (Egypt)
ataturk Hagia Sofia (Turkey)
kivi Helsinki Cathedral (Finland)
hokusai Himeji Castle (Japan)
durer Holstentor (Germany)
mlkingjr Independence Hall (USA)
thompson Jefferson Memorial (USA)
soseki Kokkai (Japan)
hemingway LA Landmark
melville Lincoln Memorial
dickens Liver Building (UK)
damemelba Melbourne Cricket Ground (Australia)
austen Metropolitan Cath. (UK)
allende Moai (Chile)
hiroshige Mt. Fuji (Japan)
yuantlee National Museum (Taiwan)
beethoven Neuschwanstein Castle (Germany)
hugo Notre Dame (France)
bunche Palace of Fine Arts (USA)
cervantes Palacio Real (Spain)
daumier Paris Opera (France)
callas Parthenon (Greece)
zewail Pharos of Alexandria (Egypt)
phu Rama IX Royal Park (Thailand)
goethe Reichstag (Germany)
dali Sagrada Familia (Spain)
basho Shuri Castle (Japan)
pauling Smithsonian Castle (USA)
haykal Sphinx (Egypt)
defoe St Paul's Cathedral (UK)
tolstoy St. Basil's Cathedral (Russia)
mozart St. Stephen's Cathedral (Austria)
pollack Statue of Liberty (USA)
bergman Stockholm Palace (Sweden)
bradman Sydney Oprea House Landmark #12
tagore Taj Mahal (India)
maugham Tower of London (UK)
joyce Trafalgar Square (UK)
amnesty United Nations (UN)
poe United States Capitol
capote Washington Monument
greene Westminster Abbey (UK)
steinbeck White House