This book is part of a book series called Wonders Of the World .

This book has been graded for interest at 9-13 years.

There are 47 pages in this book. This book was published 2011 by Mikaya Press .

This is Elizabeth Mann 's eighth Wonder of the World Book , the award winning series cited by Booklist as one of the ten best nonfiction series for young readers. Alan Witschonke is the illustrator of four Wonders of the World books: The Brooklyn Bridge , Empire State Building , The Great Wall and Hoover Dam .