Cambodia Independence Square, located in the east of the city. The Independence Monument was built to commemorate Cambodia's liberation from French colonial rule on November 9, 1953 and its complete independence. Free attractions. When you are in Phnom Penh, you can stop by and take a look, after all, it is still very meaningful. If you live in a hotel around the square, after breakfast or after breakfast, a walk to the square is also a good choice.