The best option is climbing to the Machu Picchu Mountain.

Most of visitors want to climb the Huayna Picchu for the view. However they do not know that the view from the Mountain is more beautiful. The reason is because you can get a more picturesque view of the overall site like on the famous pictures. Most of the visitors like to book the Huayna Picchu because is more popular (due to marketing) but the view they get from there is not the most authentic and they miss the nice view from the Machu Picchu Mountain.