Reading Metrics
Grade Level
Middle Grades (MG 4-8)
Book Level
6.3
Points
0.5
Fiction/Nonfiction
Nonfiction
Word Count
2396
Points per Word
0.000209
Description
Learn about the world's most famous structures and their record-breaking facts, as well as lesser-known mysterious wonders, that have served humankind throughout history and changed the way we navigate our world.