Explore the Santa Bárbara mine ruins

Ruined British slave fort on an island in the Sierra Leone River, from which thousands were shipped to the Carolinas.

Meet the thousand-year-old dead of Chauchilla, sitting in their open desert graves with hair and textiles intact

Walk among the 5,000-year-old pyramids of Caral, the oldest known city in the Americas

Cross the last Inca rope bridge, hand-woven from grass and rebuilt by four communities every June

Explore Kuélap, the walled cloud-fortress of the Chachapoya — older than Machu Picchu and nearly empty

Descend into the underground galleries of Chavín de Huántar to meet the Lanzón, a 3,000-year-old fanged god

Watch the sun rise along the Thirteen Towers of Chankillo, a 2,300-year-old solar calendar in the desert

Stand under the chullpas of Sillustani — pre-Inca burial towers built finer than the Incas managed