6. Rio Negro -- South America
Love the thought of exploring the rainforest but hate the thought of fending off spiders the size of house pets? You’re not alone, although you should be -- seriously, toughen up! You are, however, in luck: With placid views of the Rio Negro, the Amazon River’s largest tributary, as well as the dense underbrush of the rainforest, Google tends to your nature side without the attendant insects.