NaturalEarth/cultural
   ne_10m_ports
   ne_10m_parks_and_protected_lands_area
   ne_10m_populated_places
   ne_10m_admin_0_antarctic_claim_limit_lines
   ne_10m_admin_0_countries_lakes
   ne_10m_roads
   ne_10m_admin_0_scale_rank_minor_islands
   ne_10m_parks_and_protected_lands_point
   ne_10m_roads_north_america
   ne_10m_admin_0_boundary_lines_map_units
   ne_10m_airports
   ne_10m_admin_1_states_provinces_lakes_shp
   ne_10m_railroads_north_america
   ne_10m_admin_0_antarctic_claims
   ne_10m_admin_0_scale_rank
   ne_10m_admin_1_seams
   ne_10m_railroads
   ne_10m_admin_1_label_points
   ne_10m_populated_places_simple
   ne_10m_admin_0_countries
   ne_10m_admin_0_sovereignty
   ne_10m_admin_0_disputed_areas
   ne_10m_time_zones
   ne_10m_admin_1_states_provinces_lines_shp
   ne_10m_admin_0_boundary_lines_maritime_indicator
   ne_10m_urban_areas
   ne_10m_admin_0_map_subunits
   ne_10m_parks_and_protected_lands_line
   ne_10m_admin_1_states_provinces
   ne_10m_admin_0_map_units
   ne_10m_admin_0_pacific_groupings
   ne_10m_admin_0_label_points
   ne_10m_admin_0_seams
   ne_10m_admin_0_boundary_lines_land
   ne_10m_admin_0_boundary_lines_disputed_areas