Superman made his first comic appearance in 1938.

The massive amount of concrete used in the construction of the Hoover Dam will take up to 500 years to fully cure - if ever.

Public executions in the colonies of America drew thousands of spectators including women and children.

Blue jeans, invented in 1893 by Levis Strauss, were called, "bibless overalls."

The number 13 is considered lucky in China because the symbol used to illustrate it translates as "must be alive."

The Circus Maximus in Rome could hold up to a quarter of a million people.

The Roman Empire was linked together by 50,000 miles of roads.

The first U.S. skyscraper had only 10 floors.

The first U.S. telephone directory contained only 50 names and numbers.

There is a secret bar in Disneyland. It cost more than 20-grand to become a member and there is a 15-year waiting list.

Paul Stanley and Gene Simmons of KISS are both Jewish.

Driving an Indy car at top speed, one could cross the length of a football field in less than one second.

Monaco's prime source of revenue is generated from gambling.

America's first speeder was apprehended in New York, in 1899, for doing 12 mph on a bicycle.

During the Second World War, the Japanese launched balloon bombs. One reached American soil and killed six people when it exploded.

The longest street in the world is Yonge Street which stretches some 1,178 miles from Toronto to Rainy Lake, Ontario.

The Navajo is the largest native tribe in America.

Thomas Edison originally developed the phonograph as a telephone answering machine.

Coney Island was discovered by explorer Henry Hudson.

The wheel was invented in Iraq in 4,000 B.C.