#55
![](https://100.datavizproject.com/wp-content/uploads/viz/viz-55.png)
A tree map structure where the area represents the number of World Heritage sites for each country. The 2004 numbers are included as a smaller area within the 2022 area.
A tree map structure where the area represents the number of World Heritage sites for each country. The 2004 numbers are included as a smaller area within the 2022 area.