All throughout history, people have built defensive walls. There are ruins, some reconstructed, of ancient massive wall-building projects all over the world. There are Roman walls in Italy, Spain, England, and Germany. In the Philippines, the 16th century Spanish colonial government built the city of Manila and completely surrounded it with a wall. The Long Wall of Quảng Ngãi in Vietnam extends for 127.4-kilometers (79.2 miles) and includes 115 forts. And then there is the Great Wall of China. All around the globe, this truly monumental wall is one of the first things people think of when they hear “China.” On this Expedition, we’ll hike parts of the Great Wall and learn about its history and builders.