/usr/include/CGAL/Arr_point_location/ is in libcgal-dev 4.2-5ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/include/CGAL/Arr_point_location/Arr_batched_point_location_traits_2.h
/usr/include/CGAL/Arr_point_location/Arr_landmarks_pl_impl.h
/usr/include/CGAL/Arr_point_location/Arr_lm_generator_base.h
/usr/include/CGAL/Arr_point_location/Arr_lm_grid_generator.h
/usr/include/CGAL/Arr_point_location/Arr_lm_halton_generator.h
/usr/include/CGAL/Arr_point_location/Arr_lm_middle_edges_generator.h
/usr/include/CGAL/Arr_point_location/Arr_lm_nearest_neighbor.h
/usr/include/CGAL/Arr_point_location/Arr_lm_random_generator.h
/usr/include/CGAL/Arr_point_location/Arr_lm_specified_points_generator.h
/usr/include/CGAL/Arr_point_location/Arr_lm_vertices_generator.h
/usr/include/CGAL/Arr_point_location/Arr_naive_point_location_impl.h
/usr/include/CGAL/Arr_point_location/Arr_simple_point_location_impl.h
/usr/include/CGAL/Arr_point_location/Arr_trapezoid_ric_pl_impl.h
/usr/include/CGAL/Arr_point_location/Arr_triangulation_pl_functions.h
/usr/include/CGAL/Arr_point_location/Arr_triangulation_pl_impl.h
/usr/include/CGAL/Arr_point_location/Arr_walk_along_line_pl_impl.h
/usr/include/CGAL/Arr_point_location/Td_X_trapezoid.h
/usr/include/CGAL/Arr_point_location/Td_active_edge.h
/usr/include/CGAL/Arr_point_location/Td_active_fictitious_vertex.h
/usr/include/CGAL/Arr_point_location/Td_active_trapezoid.h
/usr/include/CGAL/Arr_point_location/Td_active_vertex.h
/usr/include/CGAL/Arr_point_location/Td_dag.h
/usr/include/CGAL/Arr_point_location/Td_dag_node.h
/usr/include/CGAL/Arr_point_location/Td_inactive_edge.h
/usr/include/CGAL/Arr_point_location/Td_inactive_fictitious_vertex.h
/usr/include/CGAL/Arr_point_location/Td_inactive_trapezoid.h
/usr/include/CGAL/Arr_point_location/Td_inactive_vertex.h
/usr/include/CGAL/Arr_point_location/Td_ninetuple.h
/usr/include/CGAL/Arr_point_location/Td_predicates.h
/usr/include/CGAL/Arr_point_location/Td_traits.h
/usr/include/CGAL/Arr_point_location/Td_traits_functions.h
/usr/include/CGAL/Arr_point_location/Trapezoidal_decomposition_2.h
/usr/include/CGAL/Arr_point_location/Trapezoidal_decomposition_2_impl.h
/usr/include/CGAL/Arr_point_location/Trapezoidal_decomposition_2_iostream.h
/usr/include/CGAL/Arr_point_location/Trapezoidal_decomposition_2_misc.h