Amboró, one of the most pristine national parks in all of Bolivia, is only 3 hours west of Santa Cruz. The park covers more than 600,000 hectares (1.5 million acres) and encompasses four different biodiversity zones: the Amazon basin, subtropical forests, temperate woodlands, and the cool mountainous terrain of the Andes. More than 700 species of birds have been seen in the area. Some of the rarer species include the red-fronted macaw, Bolivian recurvebill, and rufous-faced antpitta. You'll also have the opportunity to see monkeys here. There are some fantastic hiking trails that will take you to caves and waterfalls. Accommodations are mostly rustic campgrounds, though tour operators offer alternatives with the renowned bird-watching hangout Refugio Los Volcanes or the eco-friendly Mataracú Tent Camp.