We had to visit when we discovered that Cusco had a planetarium, which is run by a family (our guide is one of the brothers) and they had a lot of information about Inca culture. Our favorite part is sitting inside the dome and listening to the explanations about the stars and constellations. Unfortunately the night we went was cloudy and we didn’t see any stars through the telescope, but we still had a very pleasant time and would recommend everyone to visit. You’ll meet the staff in a square in Cusco, then take the bus to the planetarium and finally get back to town again, which is really helpful.