Why are the football championship games called Bowl games?

The college football postseason used to be one game. In 1923 it was moved to a new big stadium called the Rose Bowl in Pasadena, California. It wasn't until 1933 that another large scale postseason game was added in Miami. In order to capitalize on the popularity its counterpart was having in Pasadena, the game in Miami was called the Orange Bowl, and later the Orange Bowl Festival. As postseason college football popularity grew, other cities decided to follow suit and the Sugar Bowl in New Orleans, the Sun Bowl in El Paso and the Cotton Bowl in Dallas were created. Ever since, the name "Bowl" has stuck.