Some say the Inca Empire is an engineering empire, and she has not interrupted the large-scale projects for more than 300 years. The most famous of these is the ancient Inca Road that has been preserved to this day. The statues on both sides of the ancient road are the protector of the Indians, so the ancient road is also known as the shrine, which is an important part of Inca culture and one of the most mysterious monuments in South America.