Machu Picchu, Peru

 

While the intricate stone ruins of Machu Picchu are the work of 15th-century Inca rulers, not Mother Nature, it's the site's natural setting that makes it even more alluring. Perched atop the flattened peak of a mountain, the ancient Wonder of the World benefits from the famous backdrop of Huayna Picchu, lush green surfaces, and a barrier of Andean peaks that, despite the landmark's fame, makes you feel like you've stumbled upon a secret.