This book is part of a bilingual book series for children entitled "La Petite Pétra". It is a bilingual book written in both Haitian Creole and English. It is a Level 3 reading book as defined on the back cover of the book. Level 3 books in this series are defined as short stories (under 250 words) that are ideal for beginner autonomous readers.

Petra and Lili visit the Citadelle Henry with their brothers. The Citadelle Henry is a fortress located in the North of Haiti. The kids learn important facts about their country's history and discover new parts of their beautiful country.