A dear tourist would have to...

First of all a foreigner has to eat! And a place to eat very well could be "Patio Bellavista". It has excellent restaurants adn in the same place you can find some stores...to buy a souvenir from Santiago. They sell shirts, magnetos to the fridge, key rings and a whole world of things.
Near of "Patio Bellavista" you can walk a couples of blocks and find "San Cristobal Hill", you can get up throw elevator and have the greatest view of our city... but I have to say that it would be greater after a rain...anyway jijiji.
If it´s ski season a foregner friend would have to go to Vallen Nevado, La Parve, or some other ski resort, and if not, the tourist have to go to "Cajón del Maipo", a really wonderful site, and spend time with the nature and realx, or do some extreme sport like rafting and experience adrenalineeee!
Also must to visit the Pablo Neruda´s home "La Chascona". Neruda is considered internationality, moreover, the house it´s really beautiful and big, and full of entertainment things.
Finally, he would have to visit "Plaza de Armas" , considered as the historical center of Santiago. In there you can take pictures , cartoon yourself and take a nice and funny memory from your travel.

VISIT SANTIAGO! YOU´RE CORDIALLY INVITED!