Between 1696 and 1760, six ensembles of reducciones (settlements of Christianized Indians) inspired by the ‘ideal cities’ of the 16th-century philosophers were founded by the Jesuits in a style that married Catholic architecture with local traditions. The six that remain – San Francisco Javier, Concepción, Santa Ana, San Miguel, San Rafael and San José – make up a living heritage on the former territory of the Chiquitos.

Źródło: World Heritage Convention
http://whc.unesco.org/en/list/529