La Paz, Bolivia, is one of the highest cities in the world. The surrounding countryside holds the remains of the Tiahuanacos, whose accomplishments were a source of inspiration to the Incas. Take a side trip down the “Most Dangerous Road in the World” that snakes its way along the Andes. Then, it’s off to Lake Titicaca and to the mysterious Temple of the Sun – said to be the origin of the Incas.