Bolivia’s hallmark archaeological site sets your imagination on fire. Despite lacking the power and prestige of other ruins in Latin America – those who have visited Machu Picchu or Tikal will be hard pressed not to strike comparisons – for history buffs this pre-Inca site has a lot to offer. A massive celebration is held on the solstices, and the on-site museum provides a thought-provoking glimpse into life in this religious and astronomical center. An easy day trip from La Paz, Tiwanaku is a good place to start your Andean odyssey.