Ms. Frizzle and her tour group are transported to ancient Egypt, where they learn about the pyramids, mummification, flooding of the Nile, and other aspects of life in Egypt long ago.
When Ms. Frizzle and her student Arnold follow an underground passage beneath Craig's Castle Shop and find themselves in the middle of a siege of a 12th century English castle, they learn a great deal about both castles and the Middle Ages.
Ms. Frizzle and her tour group are transported to China 1000 years in the past, where they learn how rice, tea and silk are grown and harvested, and visit the Emperor in the Forbidden City.
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