What is San Juan, Puerto Rico?
{{Infobox settlement <!-- Basic info ---------------->| official_name = San Juan, Puerto Rico | other_name = | native_name = | nickname = La Ciudad Amurallada<br />(''The Walled City'') | settlement_type = [[Capital city]] and Municipality | motto = <!-- images and maps -----------> | image_skyline = 2013_Old_San_Juan_01.JPG | imagesize = | image_caption = | image_flag = Flag of San Juan, Puerto Rico.svg | flag_size = | image_seal = Coat_of_arms_san_juan_pr.svg | seal_size = | image_shield = | shield_size = | city_logo = | citylogo_size = | image_map = Locator-map-Puerto-Rico-San-Juan.svg | mapsize = | map_caption = Location of San Juan within the island of [[Puerto Rico]] | image_map1 = | mapsize1 = | map_caption1 = | image_dot_map = | dot_mapsize = | dot_map_caption = | dot_x = | dot_y = | pushpin_map = | pushpin_label_position = | pushpin_map_caption = | pushpin_mapsize = <!-- Location ------------------> | subdivision_type = [[Country]] | subdivision_name = [[United States]] | subdivision_type1 = [[Territory]] | subdivision_name1 = [[Puerto Rico]] | subdivision_type2 = | subdivision_name2 = | subdivision_type3 = | subdivision_name3 = | subdivision_type4 = | subdivision_name4 = <!-- Politics -----------------> | government_footnotes = | government_type = | leader_title = | leader_name = | leader_title1 = | leader_name1 = | leader_title2 = | leader_name2 = | leader_title3 = | leader_name3 = | leader_title4 = | leader_name4 = | established_title = Founded | established_date = 1521 | established_title2 = | established_date2 = | established_title3 = <!-- Incorporated (city) --> | established_date3 = <!-- Area ---------------------> | area_magnitude = | unit_pref