Vol. #1 The first book walks the line between education and entertainment, elaborating on Christopher Columbus's journey in The Discovery of America

Vol. #2 This time, Geronimo Stilton and friends must travel back in time to Ancient Egypt! The Pirate cats, jealous that the face of a man was placed on the body of the Sphinx, are determined to coerce the Pharaoh into changing the face of this monument. It’s up to Geronimo and co. to travel back in time and stop the Pirate Cats before it’s too late.

Vol. #3 The Pirate Cats are up to no good again! This time, Bonzo and company travel to Rome, Italy in the year 80 AD to the opening of the Colosseum, Rome’s largest amphitheater. The evil felines want the world to think it was they who designed the Coliseum, and infiltrate the Senate by posing as nobility. Geronimo and friends must hop into their speedy time machine and expose the cats’ wily plot, all the while taking in historical landmarks and breathtaking moments of history.

Vol. #4 What begins as a relaxing vacation turns into a time-traveling adventure, where Geronimo Stilton must travel to Khanbalik, or “The City of Khan” (modern day Beijing) in 13th Century China where he encounters Kublai Khan and Marco Polo. This time, Geronimo and friends must stop the Pirate Cats from corrupting Marco Polo’s famous book “The Travels of Marco Polo,” and changing history forever!

Vol. #5 When Geronimo’s nemeses the Pirate Cats try to travel to through time to the year 1889, they accidentally end up in 37993 BC! When the cats meet their Neanderthal ancestors, they hear the legend of a Giant Wooly Mammoth and come up with a plan to capture it and bring it back to the present, making them famous for all time. Geronimo must travel to the Ice Age to stop the cats from changing history forever!

Vol. #6 When Geronimo Stilton finds out that the Pirate Cats are going back in time to Venice in the year 1517, he knows they must be after one thing: The Mona Lisa! Geronimo and friends must travel to Renaissance Italy to stop the Pirate Cats from stealing the Mona Lisa and taking credit for what is arguably the world’s most famous painting. But the Pirate Cats have an ace up their sleeve: someone in Geronimo’s crew is an imposter!