One of the must-see attractions in Havana's old town, also known as San Francisco Square, was built in the 16th century and was originally known for the human trafficking market. There is a lion fountain in the middle of the square, and the historical buildings surrounding the square are scattered and have their own characteristics. In particular, the monastery of San Francisco must visit, its bell tower is the commanding heights of the place, overlooking the city and Havana Bay.