The surroundings of Iquique are characterized by their last nitrate. Humberstone and Santa Laura are ghost towns declared national monument and Cultural Heritage
Located 47 km east from the city of Iquique, the saltpeters are national monuments and World Heritage of Unesco. Although they worked separately, today they are a reflection of the slpendor and contrasts from the period between the late nineteenth and early twentieth centuries.
Santa Laura, in its best period, had a population of 425 inhabitants, while Humberstone surpassed 3.500.