See the valley. Although the various ruins are the undeniable highlight, a 4-5 hour bus tour of the loop Cuzco-Chincherro-Urubamba-Pisac-Cuzco shows truly spectacular landscapes, especially on clear days during the winter May-September. Tours can be booked with various agencies, although it is cheapest to just take buses between the various cities and you can start in any of them.
There are many beautiful towns in the Sacred Valley that contain great landscapes, typical restaurants, Hotels/Hostels and local markets, the largest one are: Pisac, Calca, Urubamba.