<page_title> Iberian-gauge railways </page_title> <section_title> Installations </section_title> <table> <cell> REFER network. Adjusted from the original 1,664 mm (5 ft 5 1⁄2 in) in the 19th century. <col_header> Railway </col_header> </cell> </table>
Iberian-gauge railways of Portugal were built to a 1,664 mm (5 ft 5 ¹⁄₂ in).