Although most people have heard of Machu Picchu, many do not know about Choqequirao, which is often referred to as Machu Picchu’s sister. Just like Machu Picchu, it was a city of the Incas. Located in Southern Peru, it is also accessed through the Cusco region. However, it cannot be reached by bus or train the way Machu Picchu can. In fact, the only way to visit it is to take a two day hike. Therefore, it has remained a less popular tourist site. Researchers believe Choquequirao was used as a refuge for the last Incas who tried to resist the conquistadors. The ruins are being restored, and there is talk of one day running a cable car or train into the area so more visitors can experience this city.