23 & 24 - Gino and Jesse are in front of the National Library. Maybe they are searching for the entrance to get to Bibliotren.
https://goo.gl/maps/sj6sl36 - Dana and Amanda?... they are past the main entrance of Metropolitan Park (San Cristobal Hill).
https://goo.gl/maps/feQJ738 & 40 - This place is called Patio Bellavista, very near San Cristobal Hill
https://goo.gl/maps/bEAIJ41 - They are in the Patio Bellavista area.
11. 12. 13. 14, 15 and 16 are in San Miguel. The name of the street is Departamental.
https://goo.gl/maps/y3oQfIn 16 the name of the graffiti is "Integracion"