The most emblematic house in the city belongs to Arturo Prat University as an extension centre.
The Tarapacá Giant
The largest geoglyph in the region. A remarkable planning effort considering that it is hundreds of years old. You get the best overall picture when looking on Google Earth though; therefore you could stop there if you are driving along these roads any way but it's doubtful whether it really pays to come here from a long distance.
Humberstone and Santa Laura Saltpeter Works
This UNESCO site is an old residential and production site from the days of the saltpetre era. Few residential houses are furnished, but most of the site is still in remarkable condition due to the dry atmosphere. Allow 1-2 hr to stroll around the huge area.