diff --git a/data-raw/sao_paulo/download-and-rename-shapefiles.R b/data-raw/sao_paulo/download-and-rename-shapefiles.R
new file mode 100644
index 0000000..07b8d5a
--- /dev/null
+++ b/data-raw/sao_paulo/download-and-rename-shapefiles.R
@@ -0,0 +1,68 @@
+# Saving gkpg --------------
+
+# Composing the name of the new directory ------------------
+city <- "sao_paulo"
+year <- 2023
+directory <- paste0("data-raw/", city, "/", year, "/not_harmonized/")
+
+
+# Create directory ----------------
+dir.create(directory)
+
+# Download zip file ---------------------------
+# Be careful not to upload this to GitHub.
+# It is a large file!
+
+destfile_path <- paste0(directory, "pesquisa_od.zip")
+
+
+zip_file <- paste0(
+  "https://transparencia.metrosp.com.br/sites/",
+  "default/files/Site_190225_PesquisaOD2023.zip"
+)
+
+
+download.file(url = zip_file, destfile = destfile_path)
+
+# Unzip the file -----------
+
+zip::unzip(zipfile = destfile_path, exdir = directory)
+
+
+# List files in the directory
+
+ls_dir <- list.files(directory, recursive = TRUE, full.names = TRUE)
+
+# Finding shapefiles in the directory ----
+
+shapefiles <- stringr::str_subset(ls_dir, ".shp$|.shx$|.dbf$|.prj$|.cpg") |>
+  stringr::str_subset("Municipios|Distritos|Zonas")
+
+# Copy shapefiles to the new directory ----
+fs::file_copy(shapefiles, directory)
+
+
+# Finding new shapefiles in the directory ----
+
+ls_dir_2 <- list.files(directory, recursive = FALSE, full.names = TRUE)
+
+shapefiles_2 <- stringr::str_subset(ls_dir_2, ".shp$|.shx$|.dbf$|.prj$|.cpg") |>
+  stringr::str_subset("Municipios|Distritos|Zonas")
+
+
+# Check if names are following the pattern -------
+
+rename_files <- function(name) {
+  file_name <- basename(name)
+  level <- stringr::str_extract(file_name, "Municipios|Distritos|Zonas")
+  year <- stringr::str_extract(file_name, "[0-9]{4}")
+  file_extension <- tools::file_ext(file_name)
+  new_name <- paste0(level, year, "_region.", file_extension)
+  new_path <- stringr::str_replace(name, file_name, new_name)
+  fs::file_move(name, new_path)
+}
+
+possibly_rename_files <- purrr::possibly(rename_files, otherwise = NULL)
+
+# Rename files ----
+purrr::map(shapefiles_2, possibly_rename_files)