Chilotan architecture is a unique architectural style that is mainly restricted to Chiloe Island and nearby areas. In part because of its physical isolation from the rest of Chile, and access to different materials, Chiloé has a very special architecture that differs most greatly from the typical Spanish colonial architecture. The Spanish who arrived in the 16th century, and Jesuit missionaries who followed, constructed hundreds of small wooden churches in an attempt to bring Christianity to a pagan land; the result was a mixing of Catholicism and pagan beliefs. In addition, the use of flat wooden tiles as shingles (wood shingles) became a staple in its architecture. Sixteen of these Churches of Chiloé still remain and have been designated a UNESCO World Heritage Site.