At nearly 12,000 ft above sea level, there are few other places in the world that could take you to such dizzying heights. The highest capital city in the world, La Paz is an urban jungle wedged in between the valleys of the Andes mountains. You can learn more about Bolivian history at the Calle Jaen museum or hunt for bargains at the famous Witches' Market. The spectacular view from Mirador Killi Killi is also not to be missed!