The storied capital of the Incan empire and the gateway to the imperial city of Machu Picchu, Cusco is one of the undisputed highlights of South America. Stately and historic, with stone streets and building foundation laid by the Incas more than 5 centuries ago, the town is much more than a mere history lesson, it is also suprisingly dynamic enlivened by throngs of tavelers who have transformed the historic center around the Plaza de Armas into mecca of sorts for South American adventurers.
Cusco looks ad feels like the very definition of Andean capital. IT’s a fascinating blend of pre-Columbian and colonial history and contemporary mestizo culture.
Enjoy the great nightlife around the main plaza, dodge the dodgy sellers and eat at the nice local or ex-pat places. Can be easy to get trapped here and indulge!
Visit the Inca ruins around town and do adventure activities… white water rafting is rather boring since the rivers aren’t that extreme (but good for beginners!), but scenic here 
What definitly to visit are, the saltmines, cusco city, inca - ruines, salt - mines, Sacred Valley and Machu Pichu.
Cusco is the heart of Peru and a lovely city.