Tunisia's national flag is rectangular, with an aspect ratio of 3: 2. The flag surface is red, and there is a white round ground in the center, which is about half the width of the flag. There is a red moon and a red five-pointed star on the round ground. The history of the national flag can be traced back to the Ottoman Empire. The crescent moon and the five-pointed star are symbols of the Ottoman Empire, and now they are symbols of the Republic of Tunisia and Islamic countries.