In which European city are the headquarters of OPEC?

More Questions:

What year did tennis player, Martina Hingis, turned professional?

The Chevy model known as the Camaro was originally intended to be called what?

What is better than scissors in the paper, stone, scissors game?

Which light wood is commonly used for making aeromodels?

Who wrote the 1912 novel "The Lost World"?

In Greek mythology, what is the name of the staff carried by Hermes?

Rene Laennac invented which aid for doctors in 1816?

How many feet are there in a fathom?

Which basketball superstar had a major role in the 1996 movie "Space Jam"?

In 1800, John Adams became the first US president to live where?

Prior to 1962, which political party was Ronald Reagan a member of?

Which US president declared war on Japan in 1941?

How many stories are there in Chaucer's "The Canterbury Tales"?

Who wrote the dystopian novel "A Clockwork Orange"?

What organization helped defend Earth in the sci-fi TV show "Ultraman"?