I think Santiago is a beautiful city which has a several places that you can visit. In the Sundays the best place is the Parque Forestal, is a beautiful pedestrian area in the middle of the downtown. It`s a big park with a lot of trees and roads that you can walk or relax in the grass. In the weekends you can take your bike and take the cycle lane (in this case is the park) and go to the San Cristobal Hill, is a long way, but it is worth.
Also you can visit the museum, and in Sundays is free ticket!, later I like to walk to Jose Miguel de la Barra street, and there you can see many coffee places and sit to enjoy a strong coffee and a good conversation.
mchacon Dear Elizabeth, here are my corrections: which has several not a several....on Sundays not in the Sundays! ..... in the middle of downtown not the downtown..... Good work!!! please revise your few mistakes and keep improving!!!