The Base.
This was the location of Spencer Tunick's famous photo Mardi Gras: The Base. A room in this building named for its original architect houses a long tapestry called Homage to Carl Philip Emanuel Bach. This home to a namesake Grand Organ constructed by Ronald Sharp was originally expected to cost around $7 million, a figure that was exceeded (*) over fourteenfold. This additional expense is largely attributed to the cream-colored shells that adorn the roof of this edifice, in which music is commonly played. For 10 points, identify this JÃ¸rn Utzon- designed landmark overlooking Australia's largest city.
This was the location of Spencer Tunick's famous photo Mardi Gras:
Sydney Opera House