When did the Sydney Opera House officially open its doors to the public?

More Questions:

In what year did the Pillsbury doughboy first appear on TV?

What off-road endurance race is named after the African capital where it usually ends?

Fashion guru Anna Wintour is the editor of what magazine?

On what date did the "Dennis the Menace" comic strip debut in newspapers?

Who spent months rehearsing for "My Fair Lady" then had most of her singing dubbed by Marni Nixon?

What beam derives its name from "light amplification by stimulated emission of radiation"?

In the TV show "Family Guy', Peter started a church worshipping which "Happy Days" character?

Which actor was the voice of Charles Muntz in the 2009 movie "Up"?

What was rapper Rick Ross" occupation prior to becoming a hip hop artist?

How many Grammy Awards did Frank Sinatra receive during his career?

In The Simpsons episode, "Principal Charming," where does Skinner buy an engagement ring for Patty?

What was the real first name of David Soul's "Hutch" on "Starsky and Hutch"?

What type of two-sailed vessel is particularly adept at sailing upwind?

What was the last name of the family Seymour was stalking in the movie "One Hour Photo"?

Which constitutional amendment gives US citizens the right to bear arms?